作者:G. Saucy、R. Marbet、H. Lindlar、O. Isler
DOI:10.1002/hlca.19590420624
日期:——
A new method for the preparation of α,β-unsaturated aldehydes and α,β;γ,δ-unsaturated ketones is described. The method is based upon the rearrangement of acetates of tertiary ethynyl carbinols to allenic acetates in the presence of acetic acid and silver or copper catalyst; partial conversion of the allenic acetates to diacetates takes place under the reaction conditions. In some cases enol acetates
描述了一种制备α,β-不饱和醛和α,β;γ,δ-不饱和酮的新方法。该方法是基于在乙酸和银或铜催化剂存在下,将叔乙炔甲醇的乙酸酯重排为乙酸烯丙酯。在反应条件下,将烯丙乙酸酯部分转化为二乙酸酯。在某些情况下,可以分离出烯醇乙酸酯。