Efficient Methods for the Synthesis of Thieno[3,2-b]thiophene and Thieno[3,2-b]furan Derivatives
作者:Valerii Shirinian、Alexey Shimkin、Stepan Tipikin、Mikhail Krayushkin
DOI:10.1055/s-0029-1217019
日期:2009.11
A novel approach to the synthesis of thieno[3,2-b]thiophenes and thieno[3,2-b]furans bearing various substituents from readily accessible starting materials has been developed. The methodology is based on C- and O-alkylation of ethyl 4-hydroxy-2-methylthiophene-3-carboxylate with α-halo ketones, followed by cyclization.
已经开发出一种新颖的方法,利用易于获得的原料合成带有各种取代基的噻吩并[3,2-b]噻吩和噻吩并[3,2-b]呋喃。该方法基于4-羟基-2-甲基噻吩-3-羧酸乙酯与β-卤代酮的C-和O-烷基化,然后进行环化。