Aminobromination of β-Nitrostyrene Derivatives with N,N-Dibromourethane as the Aminobrominating Reagent
作者:Zhan-Guo Chen、Peng-Fei Zhao、Yun Wang
DOI:10.1002/ejoc.201100751
日期:2011.10
A concise and efficient aminobromination reaction for β-nitrostyrene derivatives by treatment with N,N-dibromourethane was developed. For the β-nitrostyrene derivatives, the aminobromination successfully proceeded at room temperature in CH3CN without catalysis or protection by an inert gas and gave products in excellent yields (80–97 %). For the β-methyl analogs, the reaction proceeded smoothly with
开发了一种通过用 N,N-二溴氨基甲酸乙酯处理 β-硝基苯乙烯衍生物的简洁高效的氨基溴化反应。对于 β-硝基苯乙烯衍生物,氨基溴化在室温下在 CH3CN 中成功进行,无需催化或惰性气体保护,并以极好的收率(80-97%)得到产物。对于β-甲基类似物,在相同条件下以无水碳酸钾为催化剂,反应顺利进行,以良好的产率(53-78%)提供氨基溴化产物。提出了这种亲电加成反应的可能途径。