Thiophene-3-carboxaldehyde derivatives, their preparation and their use in preparing 3-thienyl acetonitrile
申请人:BEECHAM GROUP PLC
公开号:EP0234688A1
公开(公告)日:1987-09-02
The novel compound 2,5-dihydrothiophene-3-carboxaldehyde (which exists in equilibrium with the further novel compound 4-hydroxy-tetrahydrothiophene-3-carboxaldehyde) may be prepared by the reaction of mer- captoacetaldehyde with acrolein. It may be used for the manufacture of 3-thienylacetonitrile, by reaction with a cyanide followed by elimination of an appropriate hydroxy compound.