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.
新型化合物 2,5-二氢噻吩-3-甲醛(与另一种新型化合物 4-羟基-四氢噻吩-3-甲醛处于平衡状态)可通过子囊乙醛与丙烯醛的反应制备。 它可用于制造 3-噻吩基乙腈,方法是与氰化物反应,然后消除适当的羟基化合物。