Combination of Rearrangement with Metallic and Organic Catalyses - a Step- and Atom-Economical Approach to α-Spiroactones and -lactams
作者:Thomas Boddaert、Yoann Coquerel、Jean Rodriguez
DOI:10.1002/ejoc.201100734
日期:2011.9
3-dicarbonyl compounds, (homo)allylic alcohols or amines and acrylic derivatives, involving a single consecutive reaction consisting of a Wolff rearrangement/α-oxo ketene trapping/cross metathesis/Michael addition sequence is described. During the consecutive reaction optimization, the organocatalytic activity of N,N-diaryl-1,3-imidazol(in)-2-ylidene N-heterocyclic carbenes (NHCs) in the Michael addition of
从 2-重氮-1,3-二羰基化合物、(高)烯丙醇或胺和丙烯酸衍生物合成 α-螺内酯和-内酰胺的一般途径,涉及由沃尔夫重排/α-氧代乙烯酮捕获组成的单个连续反应描述了/交叉复分解/迈克尔加成序列。在连续反应优化过程中,发现了 N,N-二芳基-1,3-咪唑(in)-2-亚基 N-杂环卡宾 (NHC) 在 1,3-二羰基化合物的迈克尔加成中的有机催化活性。然后开发了一个概念上有吸引力的连续反应版本,涉及包含 SIMes [1,3-bis(2,4,