Search Results - "Organic letters"

Metal-Free C(sp2)–H/N–H Cross-Dehydrogenative Coupling of Quinoxalinones with Aliphatic Amines under Visible-Light Photoredox Catalysis by Wei, Wei, Wang, Leilei, Bao, Pengli, Shao, Yun, Yue, Huilan, Yang, Daoshan, Yang, Xiaobo, Zhao, Xiaohui, Wang, Hua

“…A novel and efficient visible-light-induced C­(sp2)–H/N–H cross-dehydrogenative coupling (CDC)-amination with both primary and secondary aliphatic amines at…”
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Acyl Radicals from α‑Keto Acids: Metal-Free Visible-Light-Promoted Acylation of Heterocycles by Zhu, Hu-Lin, Zeng, Fan-Lin, Chen, Xiao-Lan, Sun, Kai, Li, Hao-Cong, Yuan, Xiao-Ya, Qu, Ling-Bo, Yu, Bing

“…A general and metal-free visible-light-induced decarboxylative arylation procedure at room temperature was described for the construction of acylated…”
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Multiple Resonance Effect-Induced Sky-Blue Thermally Activated Delayed Fluorescence with a Narrow Emission Band by Oda, Susumu, Kawakami, Bungo, Kawasumi, Ryosuke, Okita, Ryota, Hatakeyama, Takuji

“…Efficient thermally activated delayed fluorescence materials based on the multiple resonance effect were synthesized by nucleophilic substitution and…”
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Direct C–H Cyanoalkylation of Quinoxalin-2(1H)‑ones via Radical C–C Bond Cleavage by Yang, Lin, Gao, Pin, Duan, Xin-Hua, Gu, Yu-Rui, Guo, Li−Na

“…An efficient synthesis of cyanoalkylated heteroarenes via iron-catalyzed direct C–H cyanoalkylation of heteroarenes has been developed. Structurally diverse…”
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Porous Organic Polymer-Derived Nanopalladium Catalysts for Chemoselective Synthesis of Antitumor Benzofuro[2,3‑b]pyrazine from 2‑Bromophenol and Isonitriles by Wang, Mao-Rui, Deng, Li, Liu, Guo-Chen, Wen, Ling, Wang, Jin-Ge, Huang, Ke-Bin, Tang, Hai-Tao, Pan, Ying-Ming

“…An efficient strategy for the synthesis of benzofuro­[2,3-b]­pyrazines was developed. These tricyclic scaffolds were formed through a multistep cascade…”
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BI-OAc-Accelerated C3–H Alkylation of Quinoxalin-2(1H)‑ones under Visible-Light Irradiation by He, Xiang-Kui, Lu, Juan, Zhang, Ai-Jun, Zhang, Qing-Qing, Xu, Guo-Yong, Xuan, Jun

“…An efficient, photoredox-catalyst-free radical alkylation of quinoxalin-2­(1H)-ones has been described. This reaction utilizes 4-alkyl-1,4-dihydropyridines…”
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Halogen-Bond-Promoted Photoactivation of Perfluoroalkyl Iodides: A Photochemical Protocol for Perfluoroalkylation Reactions by Wang, Yaxin, Wang, Junhua, Li, Guo-Xing, He, Gang, Chen, Gong

“…A new protocol for photochemical perfluoroalkylation reactions using perfluoroalkyl iodide, amine additive, and THF solvent is reported. This protocol does not…”
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Photocatalytic, Phosphoranyl Radical-Mediated N–O Cleavage of Strained Cycloketone Oximes by Xia, Peng-Ju, Ye, Zhi-Peng, Hu, Yuan-Zhuo, Song, Dan, Xiang, Hao-Yue, Chen, Xiao-Qing, Yang, Hua

“…A photoinduced, phosphoranyl radical-mediated protocol for the direct N–O cleavage of strained cycloketone oximes via a polar/SET crossover process was…”
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Photocatalyst-Free Visible-Light-Promoted C(sp2)–S Coupling: A Strategy for the Preparation of S‑Aryl Dithiocarbamates by Li, Guoqing, Yan, Qiuli, Gan, Ziyu, Li, Qin, Dou, Xiaomeng, Yang, Daoshan

“…We have successfully developed a green and efficient multicomponent reaction protocol to synthesize S-aryl dithiocarbamates under visible light. Most…”
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Visible-Light Induced Radical Perfluoroalkylation/Cyclization Strategy To Access 2‑Perfluoroalkylbenzothiazoles/Benzoselenazoles by EDA Complex by Liu, Yan, Chen, Xiao-Lan, Sun, Kai, Li, Xiao-Yun, Zeng, Fan-Lin, Liu, Xiao-Ceng, Qu, Ling-Bo, Zhao, Yu-Fen, Yu, Bing

“…A novel and practical fluoroalkyl radical-initiated cascade reaction was developed to access diverse 2-fluoroalkylbenzothiazoles by reacting various…”
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Deaminative Reductive Arylation Enabled by Nickel/Photoredox Dual Catalysis by Yi, Jun, Badir, Shorouk O, Kammer, Lisa Marie, Ribagorda, María, Molander, Gary A

“…Described is a cross-electrophilic, deaminative coupling strategy harnessing Katritzky salts as a new species of electrophile in Ni/photoredox dual catalytic…”
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Hidden Boron Catalysis: Nucleophile-Promoted Decomposition of HBpin by Bage, Andrew D, Hunt, Thomas A, Thomas, Stephen P

“…Simple nucleophiles with structural similarities to known hydroboration catalysts can readily mediate the formation of BH and borohydride species from…”
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Photoinitiated Three-Component α‑Perfluoroalkyl-β-heteroarylation of Unactivated Alkenes via Electron Catalysis by Zheng, Danqing, Studer, Armido

“…A visible-light-initiated α-perfluoroalkyl-β-heteroarylation of various alkenes with perfluoroalkyl iodides and quinoxalin-2­(1H)-ones is presented. This…”
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Rh(III)-Catalyzed Cascade Reactions of Sulfoxonium Ylides with α‑Diazocarbonyl Compounds: An Access to Highly Functionalized Naphthalenones by Chen, Xi, Wang, Muhua, Zhang, Xinying, Fan, Xuesen

“…An unprecedented cascade reaction of benzoyl sulfoxonium ylides with α-diazocarbonyl compounds leading to the formation of highly functionalized naphthalenones…”
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CpCo(III)/MPAA-Catalyzed Enantioselective Amidation of Ferrocenes Directed by Thioamides under Mild Conditions by Liu, Yan-Hua, Li, Peng-Xiang, Yao, Qi-Jun, Zhang, Zhuo-Zhuo, Huang, Dan-Ying, Le, Minh Dong, Song, Hong, Liu, Lei, Shi, Bing-Feng

“…Cp*Cobalt­(III)-catalyzed enantioselective C–H amidation of ferrocenes using monoprotected amino acids (MPAAs) as chiral ligands was developed. The reaction…”
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Sulfoxonium Ylides as a Carbene Precursor in Rh(III)-Catalyzed C–H Acylmethylation of Arenes by Xu, Youwei, Zhou, Xukai, Zheng, Guangfan, Li, Xingwei

“…Sulfoxonium ylides act as an efficient carbene precursor in rhodium­(III)-catalyzed C–H acylmethlyation of a variety of arenes assisted by different chelating…”
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Radical-Polar Crossover Enabled Triple Cleavage of CF2Br2: A Multicomponent Tandem Cyclization to 3‑Fluoropyrazoles by Zuo, Wanqing, Zuo, Lingling, Geng, Xiao, Li, Zhifang, Wang, Lei

“…The elaboration of step-economy and catalytic approaches for accessing diverse fluorinated heterocyclics is highly desirable. Described herein is a…”
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Decarboxylative Borylation of Aliphatic Esters under Visible-Light Photoredox Conditions by Hu, Dawei, Wang, Linghua, Li, Pengfei

“…The conventional methods for preparing alkyl boronates often necessitate anhydrous and demanding reaction conditions. Herein, a new, operationally simple…”
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Visible-Light-Promoted Redox Neutral γ,γ-Difluoroallylation of Cycloketone Oxime Ethers with Trifluoromethyl Alkenes via C–C and C–F Bond Cleavage by He, Yuwei, Anand, Devireddy, Sun, Zhengchang, Zhou, Lei

“…A visible-light-promoted redox neutral γ,γ-difluoroallylation of cycloketone oxime ethers with trifluoromethyl alkenes through C–C and C–F bond cleavage has…”
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Transition-Metal and Solvent-Free Oxidative C–H Fluoroalkoxylation of Quinoxalinones with Fluoroalkyl Alcohols by Xu, Jun, Yang, Huiyong, Cai, Heng, Bao, Hanyang, Li, Wanmei, Zhang, Pengfei

“…The first example of oxidative C–H fluoroalkoxylation of quinoxalinones with fluoroalkyl alcohols under transition-metal and solvent-free conditions is…”
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