A Novel Synthetic Approach to Diaminoacetylenes: Structural Characterization and Reactivity of Aromatic and Aliphatic Ynediamines
作者:Alex R. Petrov、Constantin G. Daniliuc、Peter G. Jones、Matthias Tamm
DOI:10.1002/chem.201002211
日期:2010.10.18
Electron‐rich diaminoalkynes with a variable substitution pattern can be conveniently prepared by lithiation of 2,2‐dibromo‐1,1‐ethenediamines; the alkynes are formed by a Fritsch–Buttenberg–Wiechell rearrangement of intermediate LiBr–vinylidene species. The first two X‐ray crystal structures of diaminoalkynes are presented, which show almost perpendicular orientations of the NC3 planes.
可以通过锂化2,2-二溴-1,1-乙二胺来方便地制备具有可变取代模式的富电子二氨基炔烃;炔烃是由中间体LiBr-亚乙烯基的Fritsch-Buttenberg-Wiechell重排形成的。介绍了二氨基炔烃的前两个X射线晶体结构,这些结构显示了NC 3平面几乎垂直的方向。