Reported herein is an effective strategy for oxidative cross-coupling of indoles with various aldehydes. The strategy is based on a two-step transformation via a well-known Mannich-type reaction and a C–N bond cleavage for carbonyl introduction. The key step—the C–N bond cleavage of the Mannich product—was enabled by electrochemistry. This strategy (with over 40 examples) ensures excellent functional-group
A new Pd‐catalyzed carbonylation of indoles for the synthesis of indol‐3‐yl arylketones under CO‐free conditions was developed. The reaction showed a broad substrate scope with moderate to excellent yields.
Copper-promoted decarboxylative direct C3-acylation of N-substituted indoles with α-oxocarboxylic acids
作者:Lin Yu、Pinhua Li、Lei Wang
DOI:10.1039/c3cc40389k
日期:——
A novel and efficient Cu-promoted decarboxylative direct C3-acylation of N-substituted indoles with α-oxocarboxylic acids for the synthesis of 3-acylindoles was developed.
Acylation of indoles via photoredox catalysis: a route to 3-acylindoles
作者:Lijun Gu、Cheng Jin、Jiyan Liu、Hongtao Zhang、Minglong Yuan、Ganpeng Li
DOI:10.1039/c5gc01931a
日期:——
A visible-light-catalyzed synthesis of 3-acylindoles from simple indoles and α-oxo acids at room temperature has been discovered. This method offers rapid access to 3-acylindoles through C–C and C–H bond activation.
Visible light-induced carbonylation of indoles with arylsulfonyl chlorides and CO
作者:Xiangguang Li、Deqiang Liang、Wenzhong Huang、Hongfu Zhou、Zhao Li、Baoling Wang、Yinhai Ma、Hai Wang
DOI:10.1016/j.tet.2016.11.009
日期:2016.12
A novel and simple strategy for the visible light-induced efficient synthesis of indol-3-yl aryl ketones from readily available arylsulfonyl chlorides and indoles with CO at room temperature was developed. This metal-free protocol has good functional group tolerance and avoids the use of transition-metal catalysts, additives, and alkaline or acidic reaction medium.