Practical one-pot sequence for the asymmetric synthesis of 1,2 diols from primary alcohols
作者:Philippe Hermange、François Portalier、Christine Thomassigny、Christine Greck
DOI:10.1016/j.tetlet.2012.11.137
日期:2013.2
practical one-pot three-step sequence is reported for the asymmetric synthesis of α-benzoyloxylated alcohols from primary alcohols. Good overall yields (36–52%) and enantioselectivities (91–94% e.e.) are obtained using a commercial organocatalyst in the key oxylation reaction. A simple modification in the protocol allows the formation of enantioenriched γ-benzoyloxylated α,β-unsaturated ester from alcohol
报道了从伯醇不对称合成α-苯甲酰氧基化醇的实际一锅三步程序。在关键的氧化反应中使用商业有机催化剂可获得良好的总收率(36-52%)和对映选择性(91-94%ee)。方案中的简单修改即可从醇中形成对映体富集的γ-苯甲酰氧基化的α,β-不饱和酯。已将合成实用程序用于从己-1-醇轻松制备(-)-γ-八内酯。