Simple and effective multi-component one-pot aldol addition/protection reactions of β-ketoesters to a series of aldehydes in the presence Me3SiCl and i-Pr2EtN have been described. The analysis of the scope of the reaction revealed a dramatic dependence of the reactivity on the substrates used. Thus the effect of a catalytic amount of DMF and different reaction conditions was widely investigated. Further transformations of the aldol adducts were particularly useful to give valuable diols and compounds with quaternary stereocenters, while X-ray structural analysis gave also important stereochemical information about this challenging reaction.
描述了一种简单有效的多组分一锅法醛醇加成/保护反应,将β-
酮酯与一系列醛在Me3SiCl和i-Pr2EtN的存在下进行。对反应范围的分析揭示了反应活性对所用底物的显著依赖性。因此,广泛研究了催化量
DMF的影响以及不同的反应条件。醛醇加成物的进一步转化尤其有助于得到有价值的二醇和具有季碳立体中心的化合物,同时X射线结构分析也提供了关于这一挑战性反应的重要立体
化学信息。