Solvent-Controlled α-Monobromination, α,α-Dibromination or Imidation of 1,3-Diketones with <i>N</i>
-Bromosuccinimide
作者:Liang-Hua Zou、Yan-Chun Li、Ping-Gui Li、Jing Zhou、Zhimeng Wu
DOI:10.1002/ejoc.201800994
日期:2018.11.8
birds! A solvent‐controlled regioselective method for α‐monobromination, α,α‐dibromination or imidation of 1,3‐diketones was developed with N‐bromosuccinimide. Dibromination of 1,3‐diketones took place efficiently in acetonitrile with the aid of visible light irradiation. One important solvent triethylorthoformate was found to be highly effective for the monobromination of 1,3‐diketones, as well as
一块石头,两只鸟!用N-溴代琥珀酰亚胺开发了一种溶剂控制的区域选择性方法,用于α-单溴化,α,α-二溴化或酰亚胺化1,3-二酮。1,3-二酮的二溴化在乙腈中借助可见光辐射有效地进行。发现一种重要的原甲酸三乙酯溶剂对1,3-二酮的单溴化非常有效,也是在无碱条件下进行酰亚胺化反应的理想介质。