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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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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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Total synthesis of spiro Ganoderma meroterpenoids spiroapplanatumines B, D, F, and H

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Org. Chem. Front., 2024, 11,6333-6339
DOI: 10.1039/D4QO01147C, Research Article
Jia-Hao Zhang, Wen-Cai Luo, Wen-Tao Chen, Yu-Tao He, Ya-Jian Hu
The first total synthesis of spiroapplanatumines B, D, F, and H as well as the possibly undiscovered natural product spiroapplanatumine R has been achieved.
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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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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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A cucurbit[8]uril-mediated host–guest complex for red-light photocatalysis

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Org. Chem. Front., 2024, 11,6327-6332
DOI: 10.1039/D4QO01492H, Research Article
Weiquan Xu, Yinghao Du, He Ma, Xingchen Tang, Jiang-Fei Xu, Xi Zhang
Two-step host–guest complexation can occur between an elongated dye and CB[8], leading to the formation of CB[8]@2TPP and 3CB[8]@2TPP sequentially. Of these species, 3CB[8]@2TPP in particular can act as an efficient red-light photocatalyst.
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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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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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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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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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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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Recent advances in asymmetric synthesis of chiral benzoheterocycles via Earth-abundant metal catalysis

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Org. Chem. Front., 2024, 11,6534-6557
DOI: 10.1039/D4QO01686F, Review Article
Jinhui Cai, Wenting Zhang, Usman Muhammad, Weishuang Li, Yanjun Xie
This review mainly focus on the assembly of chiral benzoheterocycles, such as dihydrobenzofurans, chromans, indolines, tetrahydroquinolines, etc., via Earth-abundant metal-catalyzed (Cu, Fe, Ni, and Ti) asymmetric synthesis in the last few decades.
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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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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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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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Recent advances in carbon atom addition for ring-expanding single-atom skeletal editing

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01806K, Review Article
Ting Yuan, Lei Shi
This review focuses on recent advances in carbon atom addition for ring-expanding single-atom skeletal editing.
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A Stereoselective Organocatalyzed C-Glycosylation of Indole: Implications of Acceptor-Catalyst-Donor Interaction

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Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01873G, Research Article
Lihuang Xie, Wenchao Liu, Zhenbo Guo, Qinbo Jiao, Xiaomin Shen, Tianfei Liu, Chunfa Xu
A stereoselective pyridinium hexafluorophosphate-catalyzed C-glycosylation of indole is presented, featuring the plausible formation of a catalyst-acceptor complex and a crucial H-bond between the indole N-H and the oxygen at C6...
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Catalytic asymmetric synthesis of chiral sulfilimines via S-C bond formation

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Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01963F, Highlight
Yingying Shi, Shuiyun Zheng, Jiapian Huang, Fu-Sheng He, Min Yang, Jie Wu
As the aza-analogues of sulfoxides, sulfilimines bearing S(IV) stereogenic centers hold tremendous potential in synthetic chemistry and medicinal chemistry. However, the catalytic asymmetric synthesis of chiral sulfilimines are much less...
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Thiocyanoalkylation of Alkenes via Dual Photoredox and Copper Catalysis

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Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01864H, Research Article
Xu Wang, Bi-Yin Xiao, Qi-Xuan Jiang, Wei Huang, Feng-Hua Zhang
Organic thiocyanates are commonly used as an essential organic synthesis intermediate and widely present in various drug molecules and bioactive molecules. Herein, a copper and photoredox catalyzed thiocyanoalkylation reaction of...
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Nickel-catalyzed reductive 1,2-alkylarylation of alkenes via a 1,5-hydrogen atom transfer (HAT) cascade

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01875C, Research Article
Xi Chen, Qiang Wang, Xiao-Ping Gong, Rui-Qiang Jiao, Xue-Yuan Liu, Yong-Min Liang
A nickel-catalyzed 1,2-alkylarylation of alkenes has been developed, leveraging amidyl radical-triggered 1,5-HAT with electrophiles as functionalizing reagents.
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Iridium-catalyzed asymmetric cascade allylation/lactonization of methyl salicylates: enantioselective construction of chiral benzodioxepinones

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01771D, Research Article
Bendu Pan, Yunru Wu, Yaqi Zhang, Xiaobo He, Long Jiang, Liqin Qiu
An efficient asymmetric cascade allylation/lactonization of methyl salicylates is achieved. The utilization of chiral-bridged biphenyl phosphoramidite ligand resulted in good results for the construction of a wide range of chiral benzodioxepinones.
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Stereocontrolled synthesis of heterocycles from unactivated alkynes by photoredox/nickel dual-catalyzed cyclization

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01627K, Research Article
Bo-Rong Leng, Feng Yang, Jin-Lian Bai, Yu-Wen Huang, Qing-Quan Liu, Ping Wei, De-Cai Wang, Yi-Long Zhu
We report a nickel/photoredox dual catalysis method for synthesizing heterocyclics from unactivated alkynes and aryl iodides, offering a direct, selective, and green alternative to traditional synthesis with potential in medicinal chemistry.
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Integrating electrocatalysis with biocatalysis for asymmetric synthesis

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01899K, Highlight
Yuqi Lin, Jiage Yu, Ke-Yin Ye
This highlight presents recent advances in asymmetric synthesis that integrate electrocatalysis with biocatalysis and discusses future development directions in this field.
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Metal–ligand cooperation and synergistic palladium catalysis for the dual ligand system [2,2'-bipyridin]-6(1H)–one/PCy3: milder conditions for the undirected C–H arylation of arenes

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01877J, Research Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Cintya Pinilla, Mario García-Zarza, Ana C. Albéniz
The mixture of Pd(OAc)2 and two ligands segregate into distinct active species working synergistically for the C–H arylation of simple arenes.
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Palladium-catalyzed cascade decarboxylative cyclization of alkyne-tethered aryl iodides with o-bromobenzoic acids for the synthesis of fused isoquinolinones

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01573H, Research Article
Zhaolin Quan, Yubo Duan, Zhengkai Chen
A straightforward approach for the preparation of fused isoquinolinone derivatives via palladium-catalyzed cascade decarboxylative cyclization of alkyne-tethered aryl iodides with o-bromobenzoic acids is described.
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Mechanism and origins of regioselectivity of selenium-catalyzed allylic amination reactions

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01794C, Research Article
Xiaoxiao Hu, Dengmengfei Xiao, Yu Chen, Yi Lu, Zhihan Zhang, Peiyuan Yu
The mechanism of selenium-catalyzed allylic amination reactions with different ligands has been explored using density functional theory calculations.
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Synthesis of oxa-bridged carbocycles via rhodium/Lewis acid catalyzed [3 + 3] and [4 + 3] cycloadditions of carbonyl ylides with donor–acceptor strained carbocycles

By pubs.rsc.org
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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01831A, Research Article
Jiale Li, Lingfei Wang, Pei-Nian Liu, Xingguang Li
A method for cooperative rhodium/Lewis acid-catalyzed cycloadditions of carbonyl ylides with donor–acceptor (D–A) strained carbocycles is described. It affords structurally diverse oxa-bridged carbocycles with high efficiency and stereoselectivity.
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Transition-metal-free skeletal editing of benzoisothiazol-3-ones to 2,3-dihydrobenzothiazin-4-ones via single-carbon insertion

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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01714E, Research Article
Ke Yang, Qin Li, Yanqi Luo, Dan Yuan, Chunjian Qi, Zhengyi Li, Bijin Li, Xiaoqiang Sun
Transition-metal-free ring expansion of benzoisothiazol-3-ones has been established to construct various 2,3-dihydrobenzothiazin-4-ones via single-carbon insertion.
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Rh-Catalysed Hydroacyloxylation of Cyclopropenes: Regio- and Diastereoselective Synthesis of Acyloxycyclopropanes

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Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01810A, Research Article
Ángel Manu Martínez, Gema Domínguez, Ines Alonso, Marta Palaín, Javier Perez-Castells
Cyclopropyl carboxylates are essential building blocks in biological and medicinal chemistry. However, their accessibility is severely limited by the need to pre-synthesise highly reactive cyclopropane derivatives. Herein, we report an...
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Hemilabile P,N-Ligand-Assisted Gold Catalyzed Hiyama Allylation to Access Allylarenes and 1,4-Dienes Derivatives

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Org. Chem. Front., 2025, Accepted Manuscript
DOI: 10.1039/D4QO01879F, Research Article
Yuanhao He, Wanping Ma, Yu Zhong, Yanfei Hu, Mingou Li, Fen Zhao, Zhonghua Xia, Baomin Fan
Oxidant-free gold-catalyzed reactions are emerging as a novel synthetic tool for organic transformations. Here in, we reported a hemilabile P,N-ligand-assisted gold-catalyzed Hiyama cross coupling reaction of aryl and alkenyl iodides...
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Rhodium-catalyzed synthesis of N-substituted 3-acylpyrroles from enaminones and vinylene carbonate

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Org. Chem. Front., 2025, Accepted Manuscript
DOI: 10.1039/D4QO01816H, Research Article
Sheng-Jiao Yan, Jian-Bo Ma, Yi-Mai Yin, Xing-Mei Hu, Bi-Na Shao, Kun Huang, Qing-Sheng Zhao
Skeletal editing is a highly efficient strategy for modifying the core scaffolds of drug molecules, with multi-atomic editing as an emergent approach. Herein, we present a protocol for constructing N-substituted...
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Mechanistic insights into rhodium-catalyzed C−H activation and annulation using vinyl acetate to access cinnolines and cinnolin-4(1H)-ones

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Org. Chem. Front., 2025, Accepted Manuscript
DOI: 10.1039/D4QO01734J, Research Article
Yuqin Wang, Yiling Zeng, Ya-Nan Tian, Zheng Liu, Jinhua Wang, Shuyou Chen, Shiqing Li
Transition metal-catalyzed C−H activation and annulation involving vinyl acetate remains a significant challenge, and the mechanistic process following vinyl insertion is ambiguous. Herein, we report the Rh(III)-catalyzed two-fold C−H activation...
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Telangana Cyber Security Bureau conducts digital awareness campaign for senior citizens

By www.thehindu.com
Published On :: Thu, 07 Nov 2024 11:06:15 +0530


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Woman arrested after kidnap attempt in Koti Government Maternity Hospital

By www.thehindu.com
Published On :: Thu, 07 Nov 2024 18:41:29 +0530

The accused was a habitual offender and had made a vain bid on Tuesday night, before being caught by the hospital staff and police on Wednesday


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Raid on hospitals in Hyderabad and Secunderabad leads to seizure of controlled drugs

By www.thehindu.com
Published On :: Fri, 08 Nov 2024 18:03:20 +0530

The raiding teams found substances which are are classified as controlled drugs and their sale and possession are strictly regulated under the Narcotic Drugs and Psychotropic Substances (NDPS) Act


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Mental health and resilience in higher education institutions as a mission 

By www.thehindu.com
Published On :: Sat, 09 Nov 2024 21:10:51 +0530

A two-day conclave started at IIT Hyderabad with an aim to foster healthy and harmonious environment in higher education institutions with the goal of reducing suicide rates and enhancing student and faculty wellbeing


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Three schoolgirls in Telangana tribal school hospitalised after suspected food poisoning, one critical

By www.thehindu.com
Published On :: Tue, 12 Nov 2024 19:20:20 +0530

The girls, aged between 13 and 16, suffered acute gastroenteritis, dehydration, and kidney-related complications


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Immortal moments

By www.thehindu.com
Published On :: Fri, 27 May 2016 14:44:16 +0530

The ambience was dictated by devotion, writes Jagyaseni Chatterjee.


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  • History & Culture
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The Capital confluence

By www.thehindu.com
Published On :: Wed, 03 Aug 2016 22:54:01 +0530

The Indian Languages Festival launches its first documentation project to create a direct social connect with people


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Why everyone is talking about the Big Temple 

By www.thehindu.com
Published On :: Thu, 06 Oct 2022 18:56:03 +0530

Mani Ratnam’s Ponniyin Selvan has brought this Chola architectural marvel under the spotlight once again


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  • History & Culture
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An art showcase in Hyderabad heralds the power of Gandhi as a global icon in a pre-digital era

By www.thehindu.com
Published On :: Tue, 26 Sep 2023 16:35:03 +0530

Give Peace Another Chance, artist Adarsh Baji’s series on view at Kalakriti art gallery in Hyderabad, doffs its hat to the life, times and ideology of Mahatma Gandhi ahead of his 154th birth anniversary


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