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Cyclone Dana: High alert issued across West Bengal

By www.newkerala.com
Published On :: Thu, 24 Oct 2024 02:24:01 +0530


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Cyclone Dana: East Midnapore, South 24 Parganas likely to be worst affected in Bengal

By www.newkerala.com
Published On :: Thu, 24 Oct 2024 14:08:02 +0530


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Cyclone Dana: Ferry services suspended for two days in Bengal Sundarbans

By www.newkerala.com
Published On :: Thu, 24 Oct 2024 16:20:03 +0530


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Cyclone Dana: West Bengal govt evacuates over 1.6 lac people, over 83000 people shifted to relief camps

By www.newkerala.com
Published On :: Fri, 25 Oct 2024 13:48:03 +0530


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Barring heavy rain, Cyclone Dana's impact nominal in West Bengal

By www.newkerala.com
Published On :: Fri, 25 Oct 2024 16:34:02 +0530


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Cyclone Dana: Flight, train services resume in West Bengal

By www.newkerala.com
Published On :: Fri, 25 Oct 2024 16:52:02 +0530


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Cyclone Dana: Kharif crops in Bengal may be affected by excessive rains

By www.newkerala.com
Published On :: Sat, 26 Oct 2024 00:24:02 +0530


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Cyclone Dana: Mangrove belt acting as natural speed breaker minimised impact in coastal Sundarbans

By www.newkerala.com
Published On :: Sat, 26 Oct 2024 16:00:02 +0530


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Farmers of four districts in West Bengal worst-hit by Cyclone Dana

By www.newkerala.com
Published On :: Wed, 30 Oct 2024 14:22:02 +0530


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Severe cyclone Michaung makes landfall in Andhra Pradesh, wreaks havoc

By www.thehindu.com
Published On :: Tue, 05 Dec 2023 19:17:59 +0530

Heavy rain and high-velocity winds with a maximum sustained speed of 90-100 kmph lash coastal town of Bapatla, villages; three killed in rain-related accidents; power supply affected in many areas; cyclone moving towards north, say officials


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Cyclone Michaung | Death toll rises to seven in Chennai and neighbouring districts; over 61,600 moved to relief camps

By www.thehindu.com
Published On :: Tue, 05 Dec 2023 19:49:52 +0530

Additional workforce is being sourced from neighbouring districts to undertake relief operations in Chennai and three neighbouring districts on war footing


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Cyclone Michaung leaves a trail of destruction in its wake in Bapatla, Guntur districts

By www.thehindu.com
Published On :: Tue, 05 Dec 2023 20:30:59 +0530

Heavy rains take a toll on road connectivity; many acres of standing crops have been inundated; power supply disrupted in many areas after electric poles get uprooted due to strong gales


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High performance and recyclable Ag/ZnO/PM substrate for the detection of organic pollutants

By pubs.rsc.org
Published On ::

Anal. Methods, 2024, 16,2051-2062
DOI: 10.1039/D4AY00103F, Paper
Yixin Shao, Hongxin Cai, Lingling Yan, Hang Yu, Qiang Hu, Liang Chen, Haitao Zong, Xiufang Hou
A sensitive and recyclable substrate was fabricated through in situ reduction of silver nanoparticles on zinc oxide nanorods.
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Subtle adjustment of the cyclic potential on electro-activated glassy carbon electrodes for sensitive sensing of methyl parathion

By pubs.rsc.org
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Anal. Methods, 2024, Advance Article
DOI: 10.1039/D4AY00079J, Paper
Yunyin Yang, Sian Chen, Changqiu Zhang, Yanqing Li, Xinrong Zong, Yitao Lv, Min Zhang
Upon experiencing a negligible change of 0.5 V which only takes 5 more seconds, the signal value of an e-GCE was efficiently enhanced from 2-fold to 30-fold compared with a bare GCE.
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Construction of a stable fluorescent sensor based on CsPbBr3/CdS core/shell quantum dots for selective and sensitive detection of tetracycline in ethanol

By pubs.rsc.org
Published On ::

Anal. Methods, 2024, 16,2267-2277
DOI: 10.1039/D4AY00032C, Paper
Yang He, Yangjie Li, Han Wang, Site Luo, Haihu Yu
Construction of a stable fluorescent sensor based on CsPbBr3/CdS core/shell quantum dots for selective and sensitive detection of tetracycline in ethanol via a mechanism integrating photoinduced electron transfer.
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Monolith stationary phases prepared via cyclic anhydride ring-opening polymerization as tunable platforms for chromatographic applications

By pubs.rsc.org
Published On ::

Anal. Methods, 2024, Accepted Manuscript
DOI: 10.1039/D4AY00251B, Paper
Ahmad Aqel, Ayman Ghafr, A. Yacine Badjah-Hadj-Ahmed, Zeid Abdullah ALOthman
Polymer monolithic stationary phases were prepared based on a cyclic anhydride as a reactive and tunable platform via ring-opening post-polymerization using primary amines; octadecylamine and benzylamine. The characterization techniques indicated...
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Sidechain structure–activity relationships of cyclobutane-based small molecule αvβ3 antagonists

By pubs.rsc.org
Published On ::

RSC Med. Chem., 2024, 15,3616-3624
DOI: 10.1039/D4MD00306C, Research Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Adam Throup, Manar Saleh Zraikat, Andrew Gordon, Shohreh Jafarinejad Soumehsaraei, Kathrin D. Haase, Laurence H. Patterson, Patricia A. Cooper, Katherine Hanlon, Paul M. Loadman, Mark Sutherland, Steven D. Shnyder, Helen M. Sheldrake
Cyclobutanes provide a versatile scaffold for the synthesis of small molecule integrin antagonists with good metabolic stability and in vivo tolerability.
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Inhibition of monoamine oxidases by heterocyclic derived conjugated dienones: synthesis and in vitro and in silico investigations

By pubs.rsc.org
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RSC Med. Chem., 2024, Advance Article
DOI: 10.1039/D4MD00608A, Research Article
Sunil Kumar, Bishnu Prasad Pandey, Mohamed A. Abdelgawad, Mohammed M. Ghoneim, Rania B. Bakr, Hoon Kim, Bijo Mathew
A total of 18 heterocyclic derived conjugated dienones (CD1–CD18) were evaluated for their potential monoamine oxidase (MAO)-A/-B inhibitory activity.
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A decade of pyridine-containing heterocycles in US FDA approved drugs: a medicinal chemistry-based analysis

By pubs.rsc.org
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RSC Med. Chem., 2024, Advance Article
DOI: 10.1039/D4MD00632A, Review Article
Ashish Ranjan Dwivedi, Shivani Jaiswal, Deepak Kukkar, Roshan Kumar, Thakur Gurjeet Singh, Mahendra Pratap Singh, Abhay M. Gaidhane, Sorabh Lakhanpal, K. Nagendra Prasad, Bhupinder Kumar
The present review is a concerted effort to cover drugs bearing pyridine rings approved in the last decade, and it provides thorough discussion and commentary on their pharmacokinetics and pharmacodynamics together with in-depth structural analysis.
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A novel approach for the synthesis of the cyclic lipopeptide globomycin

By pubs.rsc.org
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RSC Med. Chem., 2024, Advance Article
DOI: 10.1039/D4MD00685B, Research Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Samantha J. Bann, Stephen A. Cochrane
Lipid swapping: a new approach for the synthesis of globomycin that allows for facile lipid diversification.
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Bengaluru startup develops new tech for battery recycling, begins production

By www.thehindubusinessline.com
Published On :: Sun, 27 Oct 2024 18:13:56 +0530

Li-ion battery recycler Metastable Materials launches commercial ops


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The role of macrocycles in supramolecular assembly with polymers

By pubs.rsc.org
Published On ::

Soft Matter, 2024, 20,8549-8560
DOI: 10.1039/D4SM01053A, Review Article
Ruslan Kashapov, Yuliya Razuvayeva, Elena Fedorova, Lucia Zakharova
Supramolecular self-assembly of polymers with macrocycles has attracted the attention because it enables the spontaneous creation of nanostructures with unique properties.
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Interfacial viscoelasticity in oscillating drops of cyclodextrin-surfactant aqueous solution: experiments and theory

By pubs.rsc.org
Published On ::

Soft Matter, 2024, Accepted Manuscript
DOI: 10.1039/D4SM01007H, Paper
José Roberto Romero-Arias, Alberto S. Luviano, Miguel Costas, Aurora Hernandez-Machado, Rafael A Barrio
We present experiments involving oscillating droplets in aqueous cyclodextrin-surfactant solutions. In these experiments, α-cyclodextrin (αCD) and anionic surfactants exhibit remarkable viscoelasticity at the liquid/air interface, with dilatational modulus varying across...
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A multi-scale framework for predicting α-cyclodextrin assembly on polyethylene glycol axles

By pubs.rsc.org
Published On ::

Soft Matter, 2024, Advance Article
DOI: 10.1039/D4SM01048E, Paper
Open Access
Cameron D. Smith, Chenfeng Ke, Wenlin Zhang
We predict the assembly and time-dependent distribution of cyclodextrin along PEG axles by combining atomistic molecular dynamics with an analytical treatment of bulk diffusion. Our kinetic Monte Carlo can aid in the design of polypseudorotaxanes.
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Effects of Hydration Water on Bioresponsiveness of Polymer Interfaces Revealed by Analysis of Linear and Cyclic Polymer–Grafted Substrates

By pubs.rsc.org
Published On ::

Soft Matter, 2024, Accepted Manuscript
DOI: 10.1039/D4SM00977K, Paper
Open Access
Shin-nosuke Nishimura, Naoya Kurahashi, Shohei Shiomoto, Yoshihisa Harada, Masaru Tanaka
Given that the hydration water of polymer matrices may differ from that of outermost polymer surfaces, processes at biomaterial–biofluid interfaces and role of hydration water therein cannot be adequately examined...
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Man arrested and 20 stolen motorcycles worth ₹15 lakh recovered in Nandyal

By www.thehindu.com
Published On :: Mon, 11 Nov 2024 20:52:54 +0530


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Processes, terms and cycles [electronic resource] : steps on the road to infinity : essays dedicated to Jan Willem Klop on the occasion of his 60th birthday / Aart Middeldorp [and others] (eds.)

By darius.uleth.ca
Published On ::

Berlin ; New York : Springer, [2005]


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Norton Motorcycles announces top level changes

By www.thehindu.com
Published On :: Mon, 11 Nov 2024 22:19:04 +0530


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All-thiophene dendrimers based on cyclooctatetrathiophene: synthesis and aggregation-induced emission (AIE) features

By pubs.rsc.org
Published On ::

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01525H, Research Article
Pengfei Wang, Chunmei Zhao, Shuai Qiu, Wan Xu, Chunli Li, Zhiying Ma, Wei Cao, Li Xu, Hua Wang
A novel class of all-thiophene dendrimers with obvious AIE emissions was designed and synthesized based on saddle-shaped cyclooctatetrathiophene (COTh) as building blocks.
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State-of-the-art strategies for Lewis acid-catalyzed strain-release cycloadditions of bicyclo[1.1.0]butanes (BCBs)

By pubs.rsc.org
Published On ::

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01741B, Review Article
Xiang Liu, Jiawei He, Keyu Lin, Xingyue Wang, Hua Cao
This review primarily focuses on the latest developments in Lewis acid-catalyzed strain-release cycloaddition reactions of BCBs.
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Shaping cycles with light: a regiodivergent approach to tetracyclic aza-aromatic compounds

By pubs.rsc.org
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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01606H, Research Article
Open Access
  This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.
Clara Mañas, Belén Ibarra, Estíbaliz Merino
We present a novel visible light-promoted regiodivergent cyclization, enabling the selective synthesis of distinct azapolyaromatic regioisomers from 2-alkynlazobenzenes.
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Unravelling the different pathways of cyclohexene oxidation via a peroxyl radical generated from tert-butyl hydroperoxide (TBHP) by various metal salts

By pubs.rsc.org
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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01681E, Research Article
Lu-Jian Zhou, Xiao-Hui Liu, Han-Wen Zhang, Can Xue, Han-Kang Zhong, Xian-Tai Zhou
Two different mechanisms were obtained in the selective oxidation of cyclohexene catalyzed by CuCl2 and VCl3 respectively in presence of TBHP. The two opposed mechanisms are mainly caused by the roles of the t-BuOO˙ radical in catalytic oxidations.
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Lewis acid-controlled Pd-catalyzed chemodivergent hydrocyanation of cyclopropenes

By pubs.rsc.org
Published On ::

Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01609B, Research Article
Rongrong Yu, Song-Zhou Cai, Xianjie Fang
We report a Lewis acid-controlled Pd-catalyzed chemodivergent hydrocyanation of cyclopropenes. In the absence of Al Lewis acid, the reaction predominantly yields ring-opened allylic nitrile products while the addition of Lewis acid favors the formation of cyano-substituted cyclopropane products.
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Stereoselective access to furan-fused [5.5.0] bicyclic heterocycles enabled by gold-catalyzed asymmetric [8 + 4] cycloaddition

By pubs.rsc.org
Published On ::

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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Visible-light excited copper activating unactivated alkyl iodides for radical addition/cyclization to access oxindole derivatives

By pubs.rsc.org
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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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Structure determination of difficult-to-crystallize organic molecules by co-crystallization of a phosphorylated macrocycle

By pubs.rsc.org
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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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Well-defined chiral dinuclear copper-catalyzed tandem asymmetric propargylic amination–carboxylative cyclization sequence toward chiral 2-oxazolidinone derivatives

By pubs.rsc.org
Published On ::

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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Design, synthesis and application of bipyridine-N,N'-dioxide catalysts in asymmetric synthesis of chiral cyclopropanes

By pubs.rsc.org
Published On ::

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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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

By pubs.rsc.org
Published On ::

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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Sulfenylation of bioactive maleimides, acrylates and cyclohexenones under ambient organophotocatalysis

By pubs.rsc.org
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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

By pubs.rsc.org
Published On ::

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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Recent developments in the ring-opening transformations of gem-difluorocyclopropanes

By pubs.rsc.org
Published On ::

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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Recent advances in asymmetric synthesis of chiral benzoheterocycles via Earth-abundant metal catalysis

By pubs.rsc.org
Published On ::

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(II)-catalyzed synthesis of sulfonyl-functionalized quinone-fused cyclopenta[b]indoles via four-component cascade annulation

By pubs.rsc.org
Published On ::

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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Folding of a dynamic macrocyclic system to stabilize its cation radical state

By pubs.rsc.org
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Org. Chem. Front., 2024, Advance Article
DOI: 10.1039/D4QO01566E, Research Article
Arnab Dutta, Krzysztof Dzieszkowski, Marco Farinone, Łukasz Orzeł, Krzysztof Kruczała, Monika Kijewska, Miłosz Pawlicki
A precisely designed π-extended system responds to different stimuli by folding the structure, which prevents overoxidation and stabilizes the cation radical.
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Stereocontrolled synthesis of heterocycles from unactivated alkynes by photoredox/nickel dual-catalyzed cyclization

By pubs.rsc.org
Published On ::

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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Palladium-catalyzed cascade decarboxylative cyclization of alkyne-tethered aryl iodides with o-bromobenzoic acids for the synthesis of fused isoquinolinones

By pubs.rsc.org
Published On ::

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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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
Published On ::

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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Rh-Catalysed Hydroacyloxylation of Cyclopropenes: Regio- and Diastereoselective Synthesis of Acyloxycyclopropanes

By pubs.rsc.org
Published On ::

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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PIFA-Mediated cyclization of methyl(2-(1-phenylvinyl)phenyl)sulfane for the concise, flexible, and scalable de novo synthesis of C3-arylated benzo[b]thiophenes

By pubs.rsc.org
Published On ::

Org. Chem. Front., 2024, Accepted Manuscript
DOI: 10.1039/D4QO01589D, Research Article
Xinya Liu, Olivier Provot, Christine Tran, Jean-Francois Soule, Abdallah Hamze
The well-decorated arylated benzo[b]thiophene scaffold is a pivotal structural motif with diverse applications in medicinal chemistry. This paper outlines a de novo synthesis of C3-arylated benzo[b]thiophenes, showcasing its flexibility and...
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