Patent ID: 6465698
Filing Date: 2002-10-15
Classification: C07B,C07C

Abstract:
A process for catalytically isomerizing Z-3-methylpent-2-en-4-yn-1-ol to E-3-methylpent-2-en-4-yn-1-ol comprising:(a) contacting a stereoisomeric mixture containing Z-3-methylpent-2-en-4-yn-1-ol and E-3-methylpent-2-en-4-yn-1-ol with a source of bromine radicals in a two-phase reaction mixture having an aqueous phase and a stereoisomeric mixture phase; (b) intermixing the reaction mixture; and (c) heating the reaction mixture to a temperature from about âˆ’10Â° C. to about 100Â° C.