A convenient method for the stereoselective synthesis of cis-β-substituted-α,β-epoxyketone is established employing Sn(OTf)2 mediated cross aldol reaction between α-bromoketone and aldehyde followed by successive treatment of the adduct with KF-dicyclohexyl-18-crown-6.
建立了一种方便的方法,通过Sn(OTf)2介导的交叉 aldol 反应,在α-
溴酮和醛之间进行反应,继而对加成产物进行KF-
二环己基-18-冠-6的连续处理,选择性合成cis-β-取代的α,β-环氧酮。