Enabling iron catalyzed Doyle–Kirmse rearrangement reactions with in situ generated diazo compounds
作者:Katharina J. Hock、Lucas Mertens、Renè Hommelsheim、Robin Spitzner、Rene M. Koenigs
DOI:10.1039/c7cc02801f
日期:——
Slow addition of sodium nitrite allows the in situ preparation of highly explosive diazo compounds and enables their safe and scalable application in ironcatalyzed rearrangement reactions of allylic and propargylic sulfides. With catalyst loadings as low as 0.1 mol% an effective entry into α-mercapto-nitriles, α-mercapto-esters and α-trifluoromethyl-sulfides on a gram-scale is achieved.
Catalytic [2,3]-sigmatropic rearrangement of sulfonium ylides derived from azoalkenes: non-carbenoid Doyle–Kirmse reaction
作者:Fu-Yuan Yang、Tian-Jiao Han、Shi-Kun Jia、Min-Can Wang、Guang-Jian Mei
DOI:10.1039/d3cc00160a
日期:——
The Sc(III)-catalyzed [2,3]-sigmatropic rearrangement of sulfonium ylidesderivedfrom azoalkenes has been established. Owing to the absence of a carbenoid intermediate, this protocol represents the first non-carbenoid variant of the Doyle–Kirmse reaction. Under mild conditions, a variety of tertiary thioethers have been readily prepared in good to excellent yields.
已经建立了衍生自偶氮烯烃的硫叶立德的Sc( III ) 催化的 [2,3]-σ 迁移重排。由于没有类胡萝卜素中间体,该方案代表了 Doyle-Kirmse 反应的第一个非类胡萝卜素变体。在温和的条件下,可以很容易地以良好到极好的收率制备各种叔硫醚。
Rhodium-catalyzed Doyle-Kirmse rearrangement reactions of sulfoxoniun ylides
Doyle-Kirmse rearrangementreactions have received continuous attention as an important method for constructing complex chemical structures. Herein, we disclosed an efficient rhodium-catalyzed Doyle-Kirmse rearrangementreaction, which can simultaneously construct CC bonds and CX (X = SSe) bonds using sulfoxonium ylides as starting materials to obtain sulfur- or selenium-containing compounds. This