DIMERIZATION OF HYDROCARBONS HAVING AT LEAST ONE HYDROGEN ATOM IN THE ALPHA-POSITION AND BETA-GAMMA UNSATURATED DOUBLE BOND

摘要

PURPOSE:In the dehydrative dimerization of hydrocarbons having at least one hydrogen in the alpha-position and a beta-gamma unsaturated bond by light irradiation, a polyacid or its salt is used as a photochemical catalyst to enable selective production of the objective compound. CONSTITUTION:A substituted or unsubstituted hydrocarbon having at least one hydrogen atom in the alpha-position and a beta-gamma unsaturated bond is subjected to dehydrogenative dimerization in the presence of at least one or salt selected from the group consisting of polymolybdic acid, polytungstic acid, polytitanic acid, polyvanadic acid, polyniobic acid, polytantalic acid or their salts, under irradiation with sun light, tungsten lamp, mercury lamp, xenon lamp or deuterium lamp to produce the dimer of the hydrocarbon which is used as an intermediate of agricultural chemicals or medicines with industrial advantages.