Diastereo- and Enantioselective Direct Catalytic Aldol Reaction of 2-Hydroxyacetophenones with Aldehydes Promoted by a Heteropolymetallic Complex: Catalytic Asymmetric Synthesis of <i>a</i><i>nti</i>-1,2-Diols
作者:Naoki Yoshikawa、Takeyuki Suzuki、Masakatsu Shibasaki
DOI:10.1021/jo0162538
日期:2002.4.1
anti-selective direct catalytic asymmetric aldol reaction of 2-hydroxyacetophenones with aldehydes is described. The reaction is catalyzed by a heteropolymetallic complex to afford anti-alpha,beta-dihydroxy ketones as the major diastereomer with excellent enantioselectivity. The use of 2-hydroxyacetophenones bearing electron-donating groups at the phenyl moiety enabled efficient transformation of the aldol products
描述了2-羟基苯乙酮与醛的抗选择性直接催化不对称醛醇缩合反应。该反应由杂多金属配合物催化,以提供抗α,β-二羟基酮作为主要的非对映异构体,具有优异的对映选择性。使用在苯基部分带有给电子基团的2-羟基苯乙酮能够通过Baeyer-Villiger氧化将醛醇产物(α,β-二羟基酮)有效转化为相应的α,β-二羟基酯衍生物。还基于产物的立体化学讨论了合理的反应机理。