| abstract |
The present invention relates to a process for producing a 3-substituted thiophene represented by the general formula (2): (wherein R represents cyano, formyl, carboxy, optionally substituted hydrocarbyloxycarbonyl, or optionally substituted acyl), characterized by reacting a vinyl compound represented by the general formula (1): RCH=CHY (wherein R has the same meaning as defined above; and Y is a leaving group) with a-mercaptoacetaldehyde or a polymer thereof. |