作者:Kouzou Matsumoto、Toru Tanaka、Masaji Oda
DOI:10.1081/scc-200036572
日期:2004.12.31
is the key reaction for the introduction of the fourth 2‐thienyl group, has been developed, thus, reaction of tris(2‐thienyl)methyl anion with 2‐fluoro‐5‐cyanothiophene smoothly proceeded to give (5‐cyano‐2‐thienyl)‐tris(2‐thienyl)methane in good yield. Alkaline hydrolysis of the cyano group to carboxylic acid followed by decarboxylation at 180°C in quinoline in the presence of copper(I) oxide afforded
摘要 四(2-噻吩基)甲烷的改进合成,其中芳香亲核取代是引入第四个 2-噻吩基的关键反应,因此,三(2-噻吩基)甲基阴离子与2-氟-5-氰基噻吩顺利地以良好的产率得到(5-氰基-2-噻吩基)-三(2-噻吩基)甲烷。氰基碱水解为羧酸,然后在 180°C 下在氧化铜(I)存在下在喹啉中脱羧,得到母体四(2-噻吩基)甲烷,总产率为 50%。