Formation of 1-EthenylcyclopropanolsInvolving Kulinkovich Cyclopropanation and Peterson Olefinationof α-Trimethylsilylesters
作者:Jacques Salaün、Damien Hazelard、Jean Ollivier、Renée Paugam
DOI:10.1055/s-2003-39899
日期:——
Mercuric iodide catalyzed condensation of bis-silylketene acetals with benzaldehyde provided a 1:1 erythro and threo mixture of α-trimethylsilylesters. Only the threo adducts underwent titanium(IV)-mediated cyclopropanation and acid induced Peterson olefination to provide (Z)-1-ethenylcyclopropanols of considerable synthetic potential.
汞碘催化的双硅基酮酸酯与苯甲醛的缩合反应提供了1:1的内源体和外源体α-三甲基硅酯混合物。只有外源体加成物经历了钛(IV)介导的环丙化反应和酸诱导的彼得森烯化反应,从而产生了具有相当合成潜力的(Z)-1-乙烯基环丙醇。