Fluorinated N-[2-(haloalkyl)phenyl]imidoyl chloride, a key intermediate for the synthesis of 2-fluoroalkyl substituted indole derivatives via Grignard cyclization process
N-[2-(haloalkyl)phenyl]imidoylchloride, which was readily available from the corresponding anilines by using Uneyama's one-pot synthesis of fluorinated imidoylchloride, was found to be a key intermediate for the facile synthesis of 2-fluoroalkyl substituted indole derivatives via the Grignard cyclization process. The bromination of 3-methyl group of 3-methyl-2-trifluoromethyl indole with NBS/CCl4 led
A New and Efficient One-Pot Synthesis of 2-Fluoroalkyl Substituted Indoles
作者:Zengxue Wang、Qingwen Ma
DOI:10.1002/jhet.2290
日期:2015.11
A new simple and efficient one‐pot synthesis of 2‐fluoroalkyl substituted indoles from 2‐aminobenzyl alcohols with fluorine‐containing carboxylic acids in the presence of Ph3P, CCl4, and NEt3 is described. Various kinds of 2‐fluoroalkyl substituted indole derivatives can be conveniently prepared.
Bromotriphenylphosphonium Salt Promoted One-Pot Cyclization to 2-Fluoroalkyl-Substituted Indoles
作者:Zeng-xue Wang、Tai-feng Zhang、Qing-wen Ma、Wei-gui Ni
DOI:10.1055/s-0034-1379030
日期:——
2-Fluoroalkyl-substituted indoles were prepared in moderate to excellent yields through bromotriphenylphosphonium salt promoted ring formation with fluorine-containing carboxylic acids in the presence of triethylamine in toluene at reflux temperature. A range of 2-fluoroalkyl-substituted indole derivatives can be conveniently prepared.