Transition‐Metal‐Free Intermolecular Chlorodifluoromethylthiolation of Alkenes and Alkynes
作者:Wan‐Qiang Yuan、Li‐Yun Guo、Yu‐Tao Liu、Qing Li、Jie Shi、Fei Pan
DOI:10.1002/ejoc.202101109
日期:2021.11.25
A simple, convenient procedure for direct transition-metal-free intermolecular chlorodifluoromethylthiolation of a variety of unactivated alkenes and alkynes has been described. This methodology provides a straightforward way to construct a variety of useful SCF2H-containing chlorides from a wide range of alkenes and alkynes. The developed protocol fulfils the requirements of sustainable and green
已经描述了一种简单、方便的方法,用于各种未活化的烯烃和炔烃的直接无过渡金属分子间氯二氟甲基硫醇化。这种方法提供了一种直接的方法来从广泛的烯烃和炔烃构建各种有用的含SCF 2 H 的氯化物。开发的协议满足可持续和绿色化学的要求。
Photoredox-catalyzed procedure for carbamoyl radical generation: 3,4-dihydroquinolin-2-one and quinolin-2-one synthesis
作者:Wade F. Petersen、Richard J. K. Taylor、James R. Donald
DOI:10.1039/c7ob01274h
日期:——
A reductive approach for carbamoylradical generation from N-hydroxyphthalimido oxamides under photoredox catalysis is outlined. This strategy was applied to the synthesis of 3,4-dihydroquinolin-2-ones via the intermolecular addition/cyclization of carbamoylradicals with electron deficient olefins in a mild, redox-neutral manner. Under a general set of reactionconditions, diversely substituted 3
Photoredox-Catalyzed Reductive Carbamoyl Radical Generation: A Redox-Neutral Intermolecular Addition–Cyclization Approach to Functionalized 3,4-Dihydroquinolin-2-ones
作者:Wade F. Petersen、Richard J. K. Taylor、James R. Donald
DOI:10.1021/acs.orglett.7b00022
日期:2017.2.17
reductive generation of carbamoyl radicals using photoredox catalysis for their formation is reported. This approach facilitated the development of a redox-neutral synthesis of functionalized 3,4-dihydroquinolin-2-ones via the novel intermolecular addition–cyclization of carbamoyl radicals across electron-deficient alkenes. To illustrate the versatility of this reaction, a diverse collection of 3,4-dihydroquinolin-2-ones
Electrophilic chloro(ω-alkoxy)lation of alkenes employing 1-chloro-1,2-benziodoxol-3-one: facile synthesis of β-chloroethers
作者:Yimin Jia、Long Chen、Huaibin Zhang、Ying Zheng、Zhong-Xing Jiang、Zhigang Yang
DOI:10.1039/c8ob01634h
日期:——
reaction for electrophilic chloro(ω-alkoxy)lation of alkenes has been described. The stable chloro-iodine(III) reagent and SOCl2 were used as electrophilic and nucleophilic chlorine sources, respectively. This approach provides a straightforward way to synthesize various useful β-chloro ω-chloroalkyl ethers from a wide range of alkenes, including electron-deficient, aromatic and unactivated alkenes. The synthetic
Fe<sub>2</sub>O<sub>3</sub>-Promoted Intermolecular Chlorotrifluoromethylthiolation of Alkenes
作者:Yimin Jia、Hongmei Qin、Na Wang、Zhong-Xing Jiang、Zhigang Yang
DOI:10.1021/acs.joc.7b03261
日期:2018.3.2
chlorotrifluoromethylthiolation of alkenes by using a low-cost and more abundant iron catalyst has been developed. This protocol provides a straightforward way to synthesize a variety of useful SCF3-containing chlorides from a wide range of alkenes, including electron-deficient, aromatic, and unactivated alkenes. Mechanistic studies indicate that this is a free radical transformation, and the stronger electrophilic