Decarboxylative/decarbonylative C3-acylation of indoles via photocatalysis: a simple and efficient route to 3-acylindoles
作者:Qing Shi、Pinhua Li、Xianjin Zhu、Lei Wang
DOI:10.1039/c6gc00516k
日期:——
A simple and efficient strategy for the preparation of 3-acylindoles via visible-light promoted C3-acylation of free (NH)- and N-substituted indoles with a-oxocarboxylic acids was developed. The reaction tolerates a wide...
Decarboxylative acylation of <i>N</i>-free indoles enabled by a catalytic amount of copper catalyst and liquid-assisted grinding
作者:Jingbo Yu、Chao Zhang、Xinjie Yang、Weike Su
DOI:10.1039/c9ob00622b
日期:——
A facile decarboxylativeacylation of N-free indoles with α-ketonates via liquid-assisted grinding was reported. The reaction requires only a catalytic amount of Cu(OAc)2·H2O in combination with O2 as the terminal oxidant to give various 3-acylindoles with high efficiency. Additionally, this new methodology was applicable to a gram-scale synthesis.
Synthesis of 3-Acylindoles by Palladium-Catalyzed Acylation of Free (N–H) Indoles with Nitriles
作者:Tao-Shan Jiang、Guan-Wu Wang
DOI:10.1021/ol303440y
日期:2013.2.15
An efficient palladium-catalyzed synthesis of 3-acylindoles using free (N–H) indoles and nitriles has been developed. The acylation reaction proceeded well under the Pd(OAc)2/2,2′-bipyridine system and with d-(+)-camphorsulfonic acid as the additive. A possible mechanism involving carbopalladation of nitriles and subsequent hydrolysis of ketimines is proposed.
Boron Trifluoride Etherate Promoted Regioselective 3-Acylation of Indoles with Anhydrides
作者:Yunyun Zheng、Jiuling Li、Kai Wei
DOI:10.3390/molecules27238281
日期:——
An efficient, high-yielding and scalable procedure for the regioselective 3-acylation of indoles with anhydrides promoted by borontrifluorideetherate under mild conditions was reported. This novel protocol provided a simple way to prepare 3-(benzofuran-2-yl) indole in three steps.
The present disclosure relates to indole compounds and pharmaceutical compositions thereof, and their use in stimulating the immune system of patients in need thereof and in treating cancer.