RUTHENIUM-CATALYZED AND PALLADIUM-CATALYZED SYNTHESIS OF POLYFUNCTIONAL 1,3-DIENES

The ruthenium-catalyzed Markovnikov addition of acetic or benzoic acid to the triple bond of (E)-3-methylpent-2-en-4-yn-I-ol followed by acy lation of the alcohol group in the diene formed under the action of lo w-toxic derivatives of carbonic and formic acids opens tip a simple ro ute to dienylic carbonates and formates. Activation of these esters by catalytic amounts of palladium(0) complexes under conditions of nucle ophilic allylic substitution or decarboxylation affords functional die nes.