Oct 22, 2020 · The reaction as originally reported involved formation of a silyl enol ether followed by treatment with palladium(II) acetate and benzoquinone to yield the corresponding enone. The original publication noted its utility for regeneration of unsaturation following 1,4-addition with nucleophiles such as organocuprates.
So, the Michael reaction is a particular type of conjugate addition reaction that ɑ, β -unsaturated carbonyl compounds undergo with nucleophiles. In general, ɑ, β-unsaturated carbonyl compounds can undergo a 1,2- or 1,4-addition reaction. 1,2-addtion reactions are all of those where the nucleophile attacks the carbonyl group.