Radical Annulation of 2-Cyanoaryl Acrylamides via C═C Double Bond Cleavage: Access to Amino-Substituted 2-Quinolones
作者:Wen-Jin Xia、Tai-Gang Fan、Zhi-Wei Zhao、Xin Chen、Xiang-Xiang Wang、Ya-Min Li
DOI:10.1021/acs.orglett.1c02281
日期:2021.8.6
2-cyanoaryl acrylamides via C═C double bond cleavage has been developed for facile and efficient access to a broad spectrum of functionalized 4-amino-2-quinolones, which are important N-heterocycles. In this transformation, the solvent THF is demonstrated to play a crucial role, and the addition of alkyl radicals to nitrile, 1,5-hydride shift, and cleavage of the C–C bond are involved in the mechanism
Visible-light induced eosin Y catalysed C(sp2)-H alkylation of carbonyl substrates via direct HAT
作者:Satya Prakash Singh、Vishal Srivastava、Pravin K. Singh、Praveen P. Singh
DOI:10.1016/j.tet.2023.133245
日期:2023.2
(HAT) catalyst for C–Hactivation. A study that utilized the alkylation of C–H bonds with electron-deficientalkenes as a paradigm provided a very wide substrate scope that made it simple to access a number of significant synthons. This green and sustainable eosin Y-based photocatalytic hydrogen atom transfer method promises to diversify the functionalization of a variety of native C–H bonds.