Condensation of an α,β-unsaturated ketone, an aldehyde and trimethylsilyl phenyl sulfide or selenide, catalysed by a chiral (acyioxy)borane, and subsequent oxidative elimination gives the title adducts in high enantiomeric excess.
在手性(酰氧基)
硼烷的催化下,δ,δ-不饱和酮、醛和三甲基
硅苯基
硫醚或
硒化物发生缩合反应,随后发生氧化消除反应,生成对映体高度过剩的标题加合物。