作者:Yuya Nishio、Kotaro Yubata、Yutaro Wakai、Kotaro Notsu、Katsumi Yamamoto、Hideki Fujiwara、Hiroshi Matsubara
DOI:10.1016/j.tet.2019.01.055
日期:2019.3
Although molecular bromine (Br2) is a useful brominating reagent, it is not easy to handle. Herein, we describe the preparation of a novel air-stable bromine complex prepared from 1,3-dimethyl-2-imidazolidinone (DMI) and Br2, which was identified to be (DMI)2HBr3 by spectral and X-ray techniques. This complex was then used to brominate olefins, carbonyl compounds, and aromatics, as well as in the Hofmann
尽管分子溴(Br 2)是有用的溴化剂,但操作起来并不容易。本文中,我们描述了由1,3-二甲基-2-咪唑啉酮(DMI)和Br 2(通过光谱和X射线技术鉴定为(DMI)2 HBr 3)制备的新型空气稳定溴配合物的制备。然后将该络合物用于溴化烯烃,羰基化合物和芳族化合物,以及用于霍夫曼重排。使用该配合物的反应产物的收率几乎与使用其他溴替代物的反应产物的收率几乎相同或更高。