Allylic esters and alcohols prodn - by oxidn and esterification of olefins with acids and conversion of esters to butanediol, then methanolysis

摘要

Allylic esters and allylic alcohols are prepared by reacting a lower alkyl carboxylate, water and the corresp. carboxylic acid and alcohol with an olefin having an allylic C-H bond, and with oxygen in the presence of an oxidation catalyst and opt. an acid cocatalyst. Allyl acetate (produced from methyl acetate, acetic acid, CH3OH, water, propylene and O2) may be subjected to hydroformylation-hydrogenation to give a mixt. of monoacetates of 1,4- and 1,2-butanediols, 2-methyl-1, 3-propanediol and the corresp. dio and diacetate disproportionation products; this mixt. de-esterified (methanolysis) to give methyl acetate (recycled) and butanediols (products). Allyl acetate is used to make polymers, plasticisers etc. and allyl alcohol to make plasticisers and other org. chemicals.