By interaction of 2-substituted 1,4-enyne alcohols with 1-chloro-2,3-epoxy propane in the presence of boron trifluoride etherate there have been synthesized 2-substituted 1,4-enyne chlorohydrin by dehydrochlorination of which epoxy-1,4-enynes and epoxy-1,3,4-triens have been prepared. The addition reaction of the methyl diethyl silane to epoxy-1,4-enynes leads to the formation of mixture of silicoorganic epoxy-1,4-dienes.