N-PROTONATED AZOMETHINE YLIDES WITH A LEAVING GROUP AS SYNTHETIC EQUIVALENTS FOR NONSTABILIZED NITRILE YLIDES
作者:Otohiko Tsuge、Shuji Kanemasa、Koyo Matsuda
DOI:10.1246/cl.1985.1411
日期:1985.9.5
steps, N-(silylmethyl)amidines generate N-protonated azomethine ylides which cycloadd to olefins, acetylenes, and aldehydes giving 1- or 2-pyrrolines, pyrroles, and 2-oxazolines, respectively, after the elimination of N-substituted anilines. With this sequence, the amidines are useful synthetic equivalents of nonstabilized nitrile ylides.
通过烷基化或甲硅烷基化然后脱甲硅烷基化步骤,N-(甲硅烷基甲基)脒生成 N-质子化的偶氮甲碱叶立德,其环加成到烯烃、乙炔和醛上,在消除后分别生成 1-或 2-吡咯啉、吡咯和 2-恶唑啉N-取代的苯胺。有了这个序列,脒是有用的合成的不稳定腈叶立德等价物。