COMPOSITIONS CATALYTIQUES ALCALINES ET LEUR EMPLOI

摘要

1340897 Isomerizing alkenyl bicycloaliphatic compounds SUMITOMO CHEMICAL CO Ltd 1 July 1971 [2 July 1970 18 Aug 1970 5 June 1971] 30913/71 Heading C5E [Also in Division B1] Alkylidene cyoloaliphatic compounds of formula are prepared by isomerizing the corresponding #α,#-alkenyl compounds in the presence of an alkaline catalyst prepared by heating a mixture of an alkali metal, alumina and, optionally if the alumina contains water or hydroxy groups, an alkali metal hydroxide at a temperature above the melting point of the alkali metal. R 1-3 are H or C 1-4 alkyl radicals and R 4 is H or a C 1-8 alkyl radical. The reaction is preferably performed under an inert atmosphere and may be performed in an inert solvent.