A new synthesis of spiroacetals via alkylidenation of ester carbonyls with metal carbene complexes
作者:Michael Mortimore、Philip Kocieński
DOI:10.1016/0040-4039(88)85161-x
日期:1988.1
Metal carbene complexes prepared from alkoxy-substituted 1,1-dibromoalkanes react with alkoxy-subsutituted esters to give enol ether intermediates which undergo acid-catalysed methanolysis and cyclisation to Spiroacetals in good overall yield.
由烷氧基取代的1,1-二溴代烷烃制得的金属卡宾配合物与烷氧基取代的酯反应,生成烯醇醚中间体,该中间体经过酸催化的甲醇分解和环化成螺缩醛,总收率良好。