Department of Chemistry, Université de Montréal, Station Centre-Ville, C.P. 6128, Montreal, Qc, H3C 3J7, Canada.
J Org Chem. 2013 Sep 6;78(17):8915-21. doi: 10.1021/jo401488y. Epub 2013 Aug 20.
Although the [2,3]-Wittig and Wittig-Still rearrangements have long been known, their application in the generation of quaternary carbon centers in carbocyclic ring systems is sparse. Model studies utilizing this strategy and possible mechanisms are discussed herein. Unprecedented examples of an α-elimination pathway from stannylmethyl allyl ethers as a major undesired product in some Wittig-Still rearrangements are reported.
尽管[2,3]-Wittig 和 Wittig-Still 重排反应早已为人所知,但它们在碳环系统中环状碳中心的生成中的应用却很少。本文讨论了利用该策略的模型研究和可能的机制。报告了首例锡甲基烯丙基醚的α-消除途径,这是某些 Wittig-Still 重排反应中主要的非期望产物。