Metallation of N-vinylpyrroles and -indoles with Hg(OAc)2: N-vinyl vs. pyrrole nucleophilic sites
作者:Boris A. Trofimov、Andrey V. Ivanov、Igor A. Ushakov、Elena Yu. Schmidt、Lyubov N. Sobenina、Alexander M. Vasil'tsov、Albina I. Mikhaleva
DOI:10.1039/c2dt12393b
日期:——
N-Vinylpyrroles and -indoles bearing electron-withdrawing substituents at the pyrrole ring are mercurated, with 1 equivalent of Hg(OAc)2 in dry MeCN (20–80 °C), regioselectively at the vinyl group (yields are almost quantitative), while their congeners without electron-withdrawing functions are mercurated both at the N-vinyl group and the pyrrole ring.