申请人:Matsushita Akio
公开号:US20090137822A1
公开(公告)日:2009-05-28
The present invention relates to a process for preparing a 3-substituted thiophene represented by the formula (2):
wherein R represents a cyano group, a formyl group, a carboxyl group, a hydrocarbyloxycarbonyl group which may have a substituent(s) or an acyl group which may have a substituent(s),
which comprises reacting a vinyl compound represented by the formula (1):
RCH═CHY (1)
wherein R has the same meaning as defined above, and
Y represents a leaving group,
and an α-mercaptoacetaldehyde or a multimer thereof.
本发明涉及一种制备式(2)的3-取代噻吩的方法,其中R代表氰基、甲酰基、羧基、可具有取代基的烃氧羰基基团或可具有取代基的酰基基团;所述方法包括将式(1)表示的乙烯化合物与α-巯基乙醛或其多聚体反应,式(1)中R的含义与上述定义相同,Y表示离去基团。