A Simple and Versatile Re-Catalyzed Meyer-Schuster Rearrangement of Propargylic Alcohols to α,β-Unsaturated Carbonyl Compounds
作者:Massimo Stefanoni、Marco Luparia、Alessio Porta、Giuseppe Zanoni、Giovanni Vidari
DOI:10.1002/chem.200802622
日期:2009.4.14
Rhenium does the job! A readily available rhenium complex efficiently catalyzed the direct Meyer–Schuster‐like rearrangement of different alkyl‐ and aryl‐substituted propargylic secondary and tertiary alcohols to the corresponding α,β‐unsaturated compounds, which were produced with virtually complete E stereoselectivity. The reaction proceeded under neutral conditions and no racemization of potentially
hen胜任!易于获得的rh络合物有效地催化了不同的烷基和芳基取代的炔丙基仲和叔醇的直接Meyer-Schuster式重排,生成了相应的α,β-不饱和化合物,这些化合物实际上具有完全的E立体选择性。反应在中性条件下进行,未观察到外消旋的潜在可烯化的立体中心。