The acid free asymmetric intermolecular α-alkylation of aldehydes with alcohols has been discovered using trifluoroethanol as solvent. This unprecedented system affords the enantioenriched functionalized primary alcohols (after NaBH4 reduction) in high yields and good to excellent enantioselectivities with wide substrate scope in the absence of any acid additive.
以
三氟乙醇为溶剂,发现了醛与醇的无酸不对称分子间δ-烷基化反应。这种前所未有的体系在不使用任何酸添加剂的情况下,能以高产率和良好甚至极佳的对映选择性生成对映体富集的官能化伯醇(NaBH4 还原后),并且具有广泛的底物范围。