Reaction of 3/2-formylindoles with TOSMIC: formation of indolyloxazoles and stable indolyl primary enamines
作者:Manas Chakrabarty、Ramkrishna Basak、Yoshihiro Harigaya、Hiroaki Takayanagi
DOI:10.1016/j.tet.2004.12.022
日期:2005.2
3-Fonnylindole and its 1-substituted and 1,5-disubstituted derivatives react with TOSMIC in presence of potassium carbonate in methanol under reflux to furnish 5-(3'-indolyl)oxazoles, new stable E-2-(3'-indolyl)-2-tosylethenamines and two diastereomers of N-[2-(3'-indolyl)- 1,2-dimethoxy]ethylformamides. In contrast, 2-formylskatole furnishes N-(1-tosyl-2-skatolyl)ethenylformamide. (C) 2004 Elsevier Ltd. All rights reserved.