A one-pot synthesis and mild cleavage of 2-[2- or 5-(alkylsulfanyl)pyrrol-1-yl]ethyl vinyl ethers by t-BuOK/DMSO: a novel and facile approach to N-vinylpyrroles
作者:Nina A. Nedolya、Ol’ga A. Tarasova、Alexander I. Albanov、Boris A. Trofimov
DOI:10.1016/j.tetlet.2010.07.179
日期:2010.10
Substituted N-[2-(vinyloxy)ethyl]pyrroles, prepared in good yield through an allenic or acetylenic carbanion/isothiocyanate one-pot methodology from 2-(vinyloxy)ethyl isothiocyanate and allyloxyallene, methoxyallene, N,N-dimethyl-2-propyn-1-amine, and 3-methoxy-1-(methylsulfanyl)-1-propyne, are smoothly converted into the corresponding N-vinylpyrroles using t-BuOK/DMSO (room temperature). The reaction proceeds
取代的N- [2-(乙烯基氧基)乙基]吡咯,是通过烯丙基或炔属碳负离子/异硫氰酸酯一锅法从2-(乙烯基氧基)乙基异硫氰酸酯和烯丙氧基烯丙烯,甲氧基烯丙烯,N,N-二甲基-2-酮以高收率制备的使用t -BuOK / DMSO(室温)将丙炔-1-胺和3-甲氧基-1-(甲基硫烷基)-1-丙炔平稳转化为相应的N-乙烯基吡咯。该反应通过从N- [2-(乙烯基氧基)乙基]取代基上消除乙烯醇而进行,并且代表了一种新的制备N-乙烯基吡咯的方法。