The palladium-catalyzed coupling of acid chlorides with (E)-1, 2-bis (tri-n-butylstannyl) ethene or P-stannyl enones gives butane-l, &diones directly by reduction of the intermediate enedicarbonyl intermediate. The double bond conjugated with a single carbonyl group was not significantly reduced. The generality of the method is illustrated by two syntheses of the 1, 4-diketone ipomeanine. By performing the reaction at lower temperatures, a, P- ...
