Method of preparing thieno[3,2-c]pyridine derivatives and intermediates used therein
申请人:Yun Sangmin
公开号:US20070197789A1
公开(公告)日:2007-08-23
Ticlopidine and clopidogrel having high blood platelet aggregation inhibitory and anti-thrombotic activities are simply prepared by reacting a substituted thiophene derivative with a 2-chlorobenzylamine derivative.
Synthese von 2-substituierten und 2,3-disubstituierten Alkyl- und Aryl-thiophenen und 2,3-anellierten Thiophen-Derivaten aus Ketonen als C<sub>2</sub>-Bausteine und Carbonodithiosäure-<i>O</i>-ethyl-<i>S</i>-(2-oxoethyl)ester als C<sub>2</sub>S-Baustein
作者:Erwin Aldvogel
DOI:10.1002/hlca.19920750325
日期:1992.5.6
Synthesis of 2-Substituted and 2,3-Disubstituted Alkyl- und Aryl-thiophenes and Related 2,3-Anellated Thiophene Derivatives, Using Ketones and Carbonodithioic Acid O-Ethyl S-(2-Oxoethyl) Ester as the Building Blocks
It was found that the Birchreduction of 2-(2-thienyl)alkanoic acid and subsequent alkylation with benzyl bromide resulted in the formation of 2-alkyl-3-benzylthio-3-hexenoic acid selectively. Further, the Birchreduction of a 2,3-dialkylthiophene and subsequent alkylation with benzyl bromide gave a tetrasubstituted olefin which was formed by a selective C–S bond fission between the 1 and 5 positions