An efficient regioselective C-3 acylation of free indoles (N-H) has been accomplished via oxidative decarbethoxylation of easily available ethyl arylacetates using Cu(OAc)2 and KOtBu in DMSO.
Synthesis of 3-acylindoles via decarboxylative cross-coupling reaction of free (NH) indoles with α-oxocarboxylic acids
作者:Li-Jun Gu、Ji-Yan Liu、Li-Zhu Zhang、Yong Xiong、Rui Wang
DOI:10.1016/j.cclet.2013.10.004
日期:2014.1
Abstract A convenient and general method for acylation of free (N H) indoles via palladium-catalyzed decarboxylative cross-coupling reaction was developed. This process provided a useful method for the preparation of diverse 3-acylindoles in high yields utilizing a reaction with readily accessible reactants undermildconditions.
An efficient Cu-catalyzed decarboxylative C3-acylation of free (NâH) indoles using α-oxocarboxylic acids as acylating agents has been developed. This method was compatible with a variety of functional groups and provided an attractive alternative access to 3-acylindoles in moderate to high yields.
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...
3-Acylindoles via a One-Pot, Regioselective Friedel-Crafts Reaction
作者:Wayne M. Stalick、James H. Wynne、Christopher T. Lloyd、Samuel D. Jensen、Sean Boson
DOI:10.1055/s-2004-831177
日期:——
Within we report a general one-pot high-yielding Friedel-Crafts acylation of indole using acid chlorides and diethyl- aluminum chloride in gram scale quantities. This general synthesis affords products that are easily isolated and require no complex pu- rification procedures.