Triflimide-Catalysed Rearrangement of<i>N</i>-(1-Trimethylsilyl)allylhydrazones Results in the Formation of Vinylsilanes and Cyclopropanes
作者:Sebastian Dittrich、Franz Bracher
DOI:10.1002/ejoc.201501180
日期:2015.12
A synthesis of terminal vinylsilanes by triflimide-catalysed rearrangement of N-(1-trimethylsilyl)allylhydrazones is reported. This protocol provides a convenient access to versatile olefinic building blocks through a traceless bond construction. Hydrazones derived from aromatic aldehydes give cis-cyclopropanes in an unexpected side-reaction.
报道了通过三氟甲磺酸酯催化的 N-(1-三甲基甲硅烷基) 烯丙基腙的重排合成末端乙烯基硅烷。该协议通过无痕键结构提供了对通用烯烃构建块的便捷访问。源自芳香醛的腙在意想不到的副反应中产生顺式环丙烷。