PROCESS FOR THE PREPARATION OF OLEFINICALLY UNSATURATED COMPOUNDS, ESPECIALLY ALCENOLS

摘要

An olefinically unsaturated compound, in particular a very pure cis-isomer of an alkenylhydroxy compound of the formula CH3(CH2)m-CH=CH-(CH2)n-OR (I), where R is hydrogen or a protective group which can virtually be eliminated, m is from 1 to 12 and n is from 1 to 10, is obtained by catalytic partial hydrogenation of the corresponding acetylene derivative over a supported catalyst which contains from 0.05 to 5% by weight of palladium and from 0.05 to 15% by weight of zinc and/or cadmium.