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Intermediate diradical character and thermal cis–trans isomerization of near-infrared absorbing thionated squaraine dyes

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01722F, Research Article
Open Access
Taishi Oka, Takeshi Maeda, Daisuke Sakamaki, Naoya Suzuki, Shigeyuki Yagi, Shintaro Kodama, Hideki Fujiwara
Near-infrared absorbing squaraine dyes incorporating 4-membered thionated oxocarbon and chalcogenopyrylium moieties exhibit intermediate diradical character, which impacts thermal cis–trans isomerization.
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Synergy of prediction rule and total synthesis in solving the stereochemical puzzle of eucalactam B

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01777C, Research Article
Chenqi Wang, Junyang Liu, Tao Ye
The absolute configurations of the fungal-derived reduced polyketide eucalactam B were initially predicted using the “Biochemistry-based rule” and later confirmed through its first successful total synthesis.
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Iron-catalyzed thiolation of C(sp3)–H with sulfonyl chlorides via photoinduced ligand-to-metal charge transfer

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01488J, Research Article
Sheng-Ping Liu, Lan Yang, Yan-Hong He, Zhi Guan
A photoinduced FeCl3/HCl synergistic catalytic method enables C(sp3)–S bond formation via reductive cross-coupling of activated/inert C(sp3)–H and aryl/alkyl sulfonyl chlorides through ligand-to-metal charge transfer (LMCT).
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I2-Promoted oxidative annulation of three different amines to access diverse biheteroaryls

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01801J, Research Article
Guangping Fan, Penghui Cao, Fang Bai, Yanyan Yin, Xueyan Hou, Yani Liu, Zhenzhen Xing, Yanhui Wang, Tangqiang Sun, Qinghe Gao
An I2-promoted oxidative annulation of three different amines enables the assembly of nonsymmetrical 2,2'-biquinolines and related bis-azines through a [4π + 2σ] annulation reaction.
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HSAB theory guiding electrophilic substitution reactions of o-carborane

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01546K, Research Article
Yan Wang, Yi-Ge Li, Feijing Chen, Yan-Na Ma, Xuenian Chen
Herein, we systematically compared the reactivity of o-carborane and benzene toward different electrophiles and explained the results with the HSAB principle.
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Facile one-pot synthesis of novel imidates as multifunctional organic fluorescent materials

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01628A, Research Article
Feng-Ting Liu, Shuo Wang, Yong-Shun Chen, Jun-Ying Miao, Bao-Xiang Zhao, Zhao-Min Lin
A novel one-pot synthesis of multifunctional organic fluorescent imidates from quinolinium salt derivatives, nitrosoarenes and alcohols was presented. This method had a wide substrate scope and excellent isolated yields.
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General ppm-level Pd-catalysed asymmetric diarylalkyne hydrosilylation to access structurally diverse Si-stereogenic vinylsilanes

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01698J, Research Article
Heng Xu, Han-Xiao Yu, An-Jiu Wen, Fang-Ying Ling, Fei Ye, Li Li, Fuk Yee Kwong, Li-Wen Xu
The first example of enantioselective Pd-catalyzed hydrosilylation of symmetric and asymmetric diarylalkynes to access novel Si-stereogenic vinylsilanes with excellent ee and a high TON is realized under mild reaction conditions.
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Mechanistic insight into the dehydrogenation reaction catalyzed by an MLC catalyst with dual ancillary ligand sites

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01767F, Research Article
Gui-Xiang Zhou, Cheng Hou
This study reveals a mechanism in which a ruthenium complex catalyst improves catalytic efficiency and lowers the energy barrier in the dehydrogenation of benzyl alcohol by dynamically switching ligand sites.
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Metal-free visible-light-induced borylative/silylative pyridylation of vinylarenes

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01702A, Research Article
Yiting Zhou, Bin Liu
We present a metal-free and mild three-component reaction involving vinylarenes, NHC–BH3 complexes, hydrosilanes, and 4-cyanopyridine. Remarkably, this reaction was performed with simple and inexpensive benzophenone.
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Palladium-catalyzed synthesis of indene-1-acetates via sequential double carbopalladation and aryloxycarbonylation

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01570C, Research Article
Fei Sun, Yiyi Zheng, Zhongyao Jiang, Mingxia Wu, Zeng Lv, Hongsen Ji, Xin-Xing Wu
A novel palladium-catalyzed cascade reaction of o-iodostyrenes, internal alkynes and formates to access various indene-1-acetates through sequential double carbopalladation and aryloxycarbonylation under a palladium/air system was developed.
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Synthesis of bambusurils with perfluoroalkylthiobenzyl groups as highly potent halide receptors

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01746C, Research Article
Open Access
Matúš Chvojka, Hennie Valkenier, Vladimír Šindelář
Four new fluorinated bambusuril macrocycles were prepared to show exceptional high binding affinity towards halide anions in acetonitrile.
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Photocatalytic arylation/alkylation of olefins/alkynes via halogen-atom transfer mediated by NHC-BH3

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01562B, Research Article
Xinhan Li, Yao Zhong, Fengsong Tan, Yusong Fei, Xiaohan Zhao, Jianbin Xu, Baomin Fan
A versatile method for radical reductive cross-coupling of iodides and activated olefins under mild conditions, facilitated by NHC-BH3 through photocatalysis, was developed.
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Stereoselective access to furan-fused [5.5.0] bicyclic heterocycles enabled by gold-catalyzed asymmetric [8 + 4] cycloaddition

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01841A, Research Article
Xunhua Wang, Jianhua Wang, Xiaoxun Li
A gold-catalyzed asymmetric [8 + 4] cycloaddition was developed to afford highly functionalized furan/pyrrole-fused [5.5.0] polycyclic heterocycles with good diastereo- and enantioselectivity.
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Photoinduced cobaloxime catalysis for allylic mono- and diphosphinylation of alkenes with hydrogen evolution

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01638F, Research Article
Aijun Zhang, Miao-Miao Li, Lei Guo, Huaixiang Yang, Jiefei Guo, Da Xu, Wei Ding
A highly efficient allylic radical mono- and diphosphinylation of alkenes with secondary phosphine oxides is developed, via visible-light-induced cobaloxime catalysis.
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The reactivity of alkenyl boron reagents in catalytic reactions: recent advances and perspectives

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01703J, Review Article
Ya-Li Feng, Bo-Wen Zhang, Youzhi Xu, Shengnan Jin, Daniele Mazzarella, Zhong-Yan Cao
Recent advances focusing on novel reactivity of alkenyl boron reagents in polar or radical pathways within catalytic reactions by employing transition metal catalysis, organocatalysis have been summarized and discussed.
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Impact of boron desymmetrization on supramolecular polymerization of BODIPY dyes

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Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01848F, Research Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Tobias B. Tischer, Zulema Fernandez, Lorenz Borsdorf, Constantin Daniliuc, Shigehiro Yamaguchi, Soichiro Ogi, Gustavo Fernandez
Supramolecular polymers are often investigated for highly symmetric and planar molecules, such as typically explored BF2-substituted BODIPY dyes . However, it is surprising that the possibility of desymmetrizing the sp3...
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Visible-light mediated selective phosphonylation modification of tryptophan residues in oligopeptides

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Org. Chem. Front., 2024, 11,6287-6292
DOI: 10.1039/D4QO01028K, Research Article
Wenfang Xiong, Junye He, Jinyao Liu, Peiru Chen, Shiqi Xu, Yipeng Liu, Shiting Chen, Yuanyuan You, Zhenyu Chen, Jinwu Zhao
A direct C2-H phosphonylation strategy driven by visible light for specific modification of tryptophan-containing peptides has been reported, providing a plethora of phosphorylated tryptophan-containing peptides
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Towards the total synthesis of mandelalide B: construction of the tetrahydrofuran/α-hydroxyl lactone fragment

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Org. Chem. Front., 2024, 11,6353-6357
DOI: 10.1039/D4QO01433B, Research Article
Jia-Lei Yan, Jie Yu, Yingying Cheng, Mingze Yang, Zhengshuang Xu, Tao Ye
A stereocontrolled synthesis of the tetrahydrofuran/α-hydroxy lactone fragment of mandelalide B has been accomplished. The synthesis features a Horner-Wadsworth-Emmons fragment assembly strategy and a highly stereospecific iodine-induced cyclization.
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Pd-catalyzed S-glycosylation of cysteine-containing peptides at room temperature

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Org. Chem. Front., 2024, 11,6347-6352
DOI: 10.1039/D4QO01389A, Research Article
Linhua Shen, Franck Le Bideau, Gong Chen, Samir Messaoudi
This study reports the synthesis of thioglycopeptides via a Pd-catalyzed coupling of cysteine-containing peptides with iodoglycals. A variety of cysteine-containing peptides and other thiol nucleophiles including thiosugars and thiophenols were used.
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Visible-light excited copper activating unactivated alkyl iodides for radical addition/cyclization to access oxindole derivatives

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Org. Chem. Front., 2024, 11,6380-6384
DOI: 10.1039/D4QO01329H, Research Article
Hang Luo, Fangnian Yu, Luqing Lin
The photocopper catalyst facilitates halogen atom transfer to give unactivated alkyl radicals, which is critical for achieving radical cyclization in the absence of an exogenous photocatalyst.
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Iridium/palladium dual photocatalysis for oxidative decarboxylative esterification of alcohols using α-keto acids

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Org. Chem. Front., 2024, 11,6367-6379
DOI: 10.1039/D4QO01452A, Research Article
Subal Mondal, Soumya Mondal, Debabrata Halder, Siba P. Midya, Ankan Paul, Pradyut Ghosh
Herein, we report an unprecedented oxidative decarboxylative C–O cross-coupling reaction for the esterification of feedstock α-keto carboxylic acids and alcohols under mild conditions.
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Transition-metal-catalyzed regiodivergent sulfonylation of aziridrines for the synthesis of β-amino sulfones

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Org. Chem. Front., 2024, 11,6340-6346
DOI: 10.1039/D4QO01376J, Research Article
Qinqiong Zeng, Yujia Gong, Xiaochun He, Xuemei Zhang, Zhong Lian
We developed the first transition-metal-catalyzed, regiodivergent sulfonylation of aziridines, enabling the efficient synthesis of diverse β-amino sulfones under mild conditions with broad substrate compatibility and high regioselectivity.
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Structure determination of difficult-to-crystallize organic molecules by co-crystallization of a phosphorylated macrocycle

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Org. Chem. Front., 2024, 11,6358-6366
DOI: 10.1039/D4QO01498G, Research Article
Heng Li, Zhijin Li, Juli Jiang, Chen Lin, Leyong Wang
This work reported that 37 different difficult-to-crystallize guest molecules were co-crystallized with the host macrocycle F[3]A1-[P(O)Ph]3 at room temperature, and the molecular structures of the guests could be determined by SCXRD.
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Phosphine-controlled divergent reactions of MBH-carbonates with azaheptafulvenes: access to o-anilinyl diene and benzazepine derivatives

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Org. Chem. Front., 2024, 11,6418-6425
DOI: 10.1039/D4QO01298D, Research Article
Wei Hao, Yiwen Zhang, Xiao Han, Zhen Wang, Weijun Yao
A phosphine controlled divergent cascade reaction of MBH-carbonates with azaheptafulvenes was disclosed. PPh3 provided o-aminophenyl diene while PCy3 offered benzazepine derivative through formal [8 + 3] annulation/ring contraction cascade.
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Chiral synthetic unprecedented spiro[indoline-2,3'-thiophen]-3-ones via an organocatalytic asymmetric sulfa-Michael/aldol cascade reaction

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Org. Chem. Front., 2024, 11,6426-6436
DOI: 10.1039/D4QO01551G, Research Article
Mao Zhang, Xing-Hai Fei, Gui-Ping Yang, Cheng Lin, Wen-Jie Li, Ming-Liang Rao, Meng Zhou, Chong Zhao, Bin He, Yong-Long Zhao
A cinchona-derived squaramide-catalyzed asymmetric sulfa-Michael/aldol cascade reaction of 2-ylideneoxindoles with 1,4-dithiane-2,5-diol was developed to realize the chiral synthesis of spiro[indoline-2,3'-thiophen]-3-ones.
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Asymmetric synthesis of (aza)flavanones by the evolution of CarOx ligands

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Org. Chem. Front., 2024, 11,6444-6449
DOI: 10.1039/D4QO01345J, Research Article
Juan Yang, Wenlong Kong, Mingxin Chang, Jixing Lai, Shengkun Li
Amino-pyridine-oxazoline (NHPyOx) is conceived as an unprecedented model via the core-emulating optimization of CarOx ligands.
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Well-defined chiral dinuclear copper-catalyzed tandem asymmetric propargylic amination–carboxylative cyclization sequence toward chiral 2-oxazolidinone derivatives

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Org. Chem. Front., 2024, 11,6319-6326
DOI: 10.1039/D4QO01368A, Research Article
Yu Lan, Peng Liu, Zekai Fang, Lili Shao, Qilong Cai, Xiaoming Wang
A variety of chiral 2-oxazolidinones was obtained via a dinuclear copper-catalyzed asymmetric propargylic amination–carboxylative cyclization sequence of propargylic esters with alkyl amine hydrochlorides and CO2.
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Theoretical insights into Pd-catalyzed dual γ-1,1-C(sp3)–H activation of aliphatic carboxylic acids: mechanistic pathways, substituent influence on product selectivity, diastereoselectivity, and additive effects

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Org. Chem. Front., 2024, 11,6393-6410
DOI: 10.1039/D4QO01451K, Research Article
Jiaoyang Liu, Li-juan Huang, Zeang Sun, Juan Li
DFT calculations were employed to explore the detailed reaction mechanism and the origins of the experimentally observed product, regio-, and diastereoselectivities in the Pd-catalyzed dual-γ-1,1-C(sp3)–H activation of aliphatic carboxylic acids.
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A pillar[5]arene-based three-component supramolecular copolymer for the fluorescence detection of spermine

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Org. Chem. Front., 2024, 11,6293-6303
DOI: 10.1039/D4QO01470G, Research Article
Open Access
Martina Mazzaferro, Daniele Crisafulli, Francesca Mancuso, Marco Milone, Fausto Puntoriero, Anna Irto, Salvatore Patanè, Valentina Greco, Alessandro Giuffrida, Ilenia Pisagatti, Anna Notti, Melchiorre F. Parisi, Giuseppe Gattuso
A supramolecular copolymer, composed of a bis-pillar[5]arene diacid and complementary alkylidene- and perylene-bisimide-bis-imidazole comonomers, acts as an OFF/ON luminescent sensor for spermine.
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Design, synthesis and application of bipyridine-N,N'-dioxide catalysts in asymmetric synthesis of chiral cyclopropanes

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Org. Chem. Front., 2024, 11,6470-6476
DOI: 10.1039/D4QO01532K, Research Article
Xiaoying Cao, Xue Tian, Minmin Liu, Shi-Wu Li
A novel type of highly efficient chiral C2-symmetric bipyridine-N,N'-dioxide ligands was prepared and successfully applied in the synthesis of optically pure 1,2,3-trisubstituted cyclopropanes.
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A general method for E-selective olefination of acylsilanes with isocyanides via silver catalysis

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Org. Chem. Front., 2024, 11,6450-6458
DOI: 10.1039/D4QO01528B, Research Article
Xiu-Xia Liang, Dan-Ni Yang, Xiao-Hui Yan, Peng Wang, Man-Yi Han
A silver-catalyzed olefination reaction between acylsilanes and isocyanides is developed, resulting in E-vinylsilanes with good yields and high stereoselectivities.
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Visible-light-promoted catalytic epoxidation of alkenes under metal-free conditions

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Org. Chem. Front., 2024, 11,6437-6443
DOI: 10.1039/D4QO01265H, Research Article
Dabao Tan, Xiaoyan Cai, Lele Zhang, Boyu Liu, Jianbin Zeng, Feiming Li, Zhixiong Cai, Mingqiang Huang, Xiaoping Chen, Shunyou Cai
In this work, we report a method for the synthesis of functionalized epoxy analogues using the synergistic interaction of 4CzIPN and oxygen under visible light stimulation.
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Nickel-catalysed enantioselective cross-electrophile coupling reaction with the retention of the β-fluorine atom

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Org. Chem. Front., 2024, 11,6459-6469
DOI: 10.1039/D4QO01555J, Research Article
Xin-Yi Shi, Xueyuan Yan, Xiaodong Tang, Shi-Jing Zhai, Genping Huang, Jun-An Ma, Fa-Guang Zhang
A nickel-catalysed enantioselective reductive cross-coupling reaction of a new monofluoromethyl building block with acid chlorides is developed to give chiral α-monofluoromethyl acyloin derivatives.
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Activation of donor–acceptor cyclopropanes under basic conditions: ring opening of 2-(p-siloxyaryl)cyclopropane 1,1-dicarboxylates with nitro compounds and other C-nucleophiles

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Org. Chem. Front., 2024, 11,6483-6494
DOI: 10.1039/D4QO01472C, Research Article
Yulia A. Antonova, Andrey A. Tabolin
A new activation mode for donor–acceptor cyclopropanes was proposed and implemented in their reaction with nitro compounds and other common C-nucleophiles.
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Electrochemical approach for upgrading the pollutant CS2: three-component N–H thiocarbamylation of sulfoximines

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Org. Chem. Front., 2024, 11,6477-6482
DOI: 10.1039/D4QO01310G, Research Article
Peng Qian, Wenjing Xiong, Qian Meng, Jinxiu Liu, Xiyuan Li, Liangquan Sheng
We report an electrochemical approach for upgrading the pollutant CS2via the thiocarbamylation of sulfoximines, in which CS2 and amines are incorporated as a readily available source of dithiocarbamate.
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Carbonate-assisted selectively deoxygenative cross-coupling reaction between aryl and aliphatic aldehydes: a straightforward route to access α-alkylated aryl ketones

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Org. Chem. Front., 2024, 11,6510-6517
DOI: 10.1039/D4QO01517G, Research Article
Yu Sun, Yi Wang, Zhijun Zuo
A novel reductive cross-coupling reaction of two different aldehydes for rapidly assembling α-alkylated aryl ketones has been developed. The inexpensive carbonate served not only as a base but also as an efficient electron donor.
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Anomalous magnetic behaviour induced by a structural phase transition with anisotropic thermal expansion in a spirodiradical

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Org. Chem. Front., 2024, 11,6495-6502
DOI: 10.1039/D4QO01098A, Research Article
Open Access
Takuya Kanetomo, Daigo Matsunaga, Shinichi Ogawa, Masaya Enomoto
A Ge-centred spirodiradical exhibited anomalous magnetic behaviour, influenced by two key structural factors: negative thermal expansion and a structural phase transition.
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Sulfenylation of bioactive maleimides, acrylates and cyclohexenones under ambient organophotocatalysis

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Org. Chem. Front., 2024, 11,6503-6509
DOI: 10.1039/D4QO01342E, Research Article
Debanjana Bag, Rajjakfur Rahaman, Anindya S. Manna, Subhasis Pal, Rajesh Nandi, Shobhon Aich, Narendra Nath Ghosh, Dilip K. Maiti
A novel visible light-induced sulfenylation of biologically important maleimides, acrylates and cyclohexenones has been developed using cheap and easily available organophotoredox catalyst Eosin Y with thiols under ambient conditions.
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Cobalt-catalyzed enantioselective reductive addition of ketimine with cyclopropyl chloride to construct chiral amino esters bearing cyclopropyl fragments

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Org. Chem. Front., 2024, 11,6311-6318
DOI: 10.1039/D4QO01474J, Research Article
Jiangtao Hu, Tingting Xia, Xianqing Wu, Hongrui Feng, Jingping Qu, Yifeng Chen
Co-catalyzed asymmetric reductive addition of ketimine with cyclopropyl chloride has been realized to access diverse chiral amino esters bearing cyclopropyl fragments with broad functional group tolerance and excellent enantioselectivities.
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Transition-metal-catalyzed C–Ge coupling reactions

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Org. Chem. Front., 2024, 11,6558-6572
DOI: 10.1039/D4QO01637H, Review Article
Jie Ke, Cadmus Du Chen, Li-Qing Ren, Bing Zu, Bin Li, Chuan He
This review covers the development and recent progress in transition-metal-catalyzed C–Ge coupling reactions. The goal is to provide a clear overview of the field, identify current challenges, and inspire further applications in this growing area.
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Recent developments in the ring-opening transformations of gem-difluorocyclopropanes

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Org. Chem. Front., 2024, 11,6518-6533
DOI: 10.1039/D4QO01583E, Review Article
Leiyang Lv, Junqi Su, Zhiping Li
This review summarizes the advances of gem-F2CPs as fluoroallylic synthons in transition metal-catalysed ring-opening/cross-coupling reactions via single, double or no C-F bond cleavage on the last two years.
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Shining light on sulfonium salts and sulfur ylides: recent advances in alkylation under photoredox catalysis

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Org. Chem. Front., 2024, 11,6573-6588
DOI: 10.1039/D4QO01644K, Review Article
Zhe Jin, Tingwei Yu, Hui Wang, Penghao Jia, You Huang
Recent advancements in photoredox alkylation with sulfur ylides, sulfonium salts and related analogues are summarized in this review.
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LiTMP-LiBr complex-induced lateral lithiation and cross ester condensation: direct access to isocoumarins from 2-methoxy o-toluate esters

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01678E, Research Article
Open Access
Mintu Rehman, Sajib Daimary, Rasajna Madhusudhana, Rajendar Goreti
LiTMP-LiBr complex promotes cross-ester coupling of 2-methoxy o-toluate esters to directly yield isocoumarin is demonstrated. Method applied to many natural product precursors including synthesis of (+)- and (−)-lunatinins.
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A two-step Kinugasa/Conia-ene-type sequential reaction for the asymmetric synthesis of 8-methylene-2,6-diazaspiro[3.4]octane-1,5-diones

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01388C, Research Article
Shanyue Li, Qicai Ma, Bohua Wu, Haowen Ma, Wei Zhou, Qian Cai
A two-step Kinugasa/Conia-ene-type sequential reaction is developed. The process provided a simple and efficient access to chiral 8-methylene-2,6-diazaspiro[3.4]octane-1,5-diones.
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Copper-catalyzed alkynyldisulfuration of arynes: an efficient access to unsymmetrical disulfides

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Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01844C, Research Article
Shuai Huang, Yumin Zhang, Yuekai Li, Chen-Ho Tung, Xin Li, Zhenghu Xu
This article investigates a copper-catalyzed alkynyl disulfuration reaction of aryne formed in situ to synthesize o‑alkynyl aryl disulfides. The transformation proceeds through the in situ generation of aryne, followed by...
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Enantioselective Addition of 3-hydroxyquinolin-2(1H)-one to Isatin and Pyrazole-4,5-dione Derived Ketimines

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Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01895H, Research Article
Yue Wei, Guishun Bai, Jiamin Wu, Yi Hua, Tao Zhang, Congyong Yue, Hong Wang, Xiaoze Bao
The enantioselective reactivity of 3-hydroxyquinolin-2(1H)-ones was developed through their addition to isatin and pyrazole-4,5-dione derived ketimines, affording novel architectures featuring multiple natural products scaffolds in high yield with excellent enantioselectivities....
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DABSO-Mediated Pummerer Reaction Enables One-Pot Synthesis of Pyrroloquinolines for Accessing Marinoquinolines: Mechanistic, Photophysical and Pharmacological Investigations

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Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01512F, Research Article
Rahimuddin Khan, Dipun Kumar Penthi, Aditi Chatterjee, Chandrakanta Sahoo, Shanti Gopal Patra, Viswanathan Arun Nagaraj, Tabrez Khan
A new one-pot acid- and exogenous oxidant-free synthesis of pyrrolo[2,3-c]quinolines has been developed. The strategy involves chemoselective reduction of the 3-(2-nitrophenyl)-1H-pyrroles (pyrrolnitrin derivatives) and subsequent DABSO-facilitated Pummerer reaction in the...
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Copper(II)-catalyzed synthesis of sulfonyl-functionalized quinone-fused cyclopenta[b]indoles via four-component cascade annulation

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01560F, Research Article
Hong Xu, Jie Liao, Fei Ren, Chuan-Rong Zhou, Xiao-Zhuo Liu, Yao Xiao, Dong-Wei Hang, Fuyu Li, Bei Wang, Ji-Yu Wang
Through crucial selective radical tandem process and intramolecular nucleophilic addition, a facile copper-catalyzed four-component cascade has been realized to selectively construct novel sulfonyl-functionalized quinone-fused cyclopenta[b]indole.
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Regio- and stereoselective azidation of activated N-allenamides: an entry to α, β, γ and δ-amido-azides

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01802H, Research Article
Dorian Schutz, Maxime Hourtoule, Laurence Miesch
A totally controlled regiodivergent azidation of activated N-allenamides is described, offering a broad range of diverse functionalized amido-azide derivatives.
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Catalyst-free C–H methylation of heteroarenes enabled by electron donor–acceptor complex photoactivation

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01309C, Research Article
Jiayang Wang, Baoer Shao, Haixia Ge, Huiyu Xue, Xiangyuan Ding, Yuqi Li, Peiyao Sheng
A visible-light-induced direct C–H methylation of heterocycles (including quinoxalinones, pyrazinones, quinolinones and coumarins) with methylamines via EDA complex photoactivation was developed.
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