Synthesis of 1,3- and 1,2,3-functionalized pyrroles via Ir(I)-catalyzed vinylation of allyl alcohols
作者:David Alavez-Rosas、Mauricio Maldonado-Domínguez、Oscar González-Antonio、Margarita Romero-Ávila、José Méndez-Stivalet、Blas Flores-Pérez
DOI:10.1007/s10593-017-2087-8
日期:2017.5
was developed through a sequence involving O-vinylation of allyl alcohols followed by Claisen rearrangement and further ozonolysis, concurring in a Paal–Knorr reaction with primary amines. Hg(II) and Ir(I) catalysts and different vinylating reagents were tested. The best results were consistently obtained with the [Ir(cod)Cl]2–vinyl acetate system. The featured methodology gives access to functionalized
通过涉及烯丙醇的O-乙烯基化,随后的Claisen重排和进一步的臭氧分解的序列,开发了一种有效的制备1,3-二取代和1,2,3-三取代的吡咯的方法,该方法与伯胺类。测试了Hg(II)和Ir(I)催化剂以及不同的乙烯基化试剂。使用[Ir(cod)Cl] 2 –乙酸乙烯酯体系可始终获得最佳结果。特色的方法可以以较高的总体收率获得功能化的吡咯,其化学结构可能引起各种应用的兴趣。