Conjugated dienes containing a cyano group having the formula ##EQU1## wherein R.sub.1 and R.sub.2 represent hydrogen atom, an alkyl group or a phenyl group are produced by dehydrating 2-cyano-3-hydroxy-1-olefins in the presence of an alkaline catalyst while continually removing the product being formed from the reaction system.
含有
氰基的共轭二烯烃的分子式为##EQU1##其中R.sub.1和R.sub.2代表氢原子、烷基或苯基,通过在碱性催化剂存在下脱
水2-
氰基-3-羟基-1-烯烃制备,同时不断将产物从反应系统中移除。