Graphene oxide as a catalyst for one-pot sequential aldol coupling/aza-Michael addition of amines to chalcones through in situ generation of Michael acceptors under neat conditions
作者:Dariush Khalili、Salime Lavian、Mohammadesmaeil Moayyed
DOI:10.1016/j.tetlet.2019.151470
日期:2020.2
bromide (TBAB) was found to function as an efficient catalyst for one-pot sequential aldol coupling/aza-Michael addition of amines to chalcones in a single reaction vessel. Benzaldehydes and acetophenone were coupled in situ to produce their corresponding chalcones which underwent a subsequent aza-Michael addition under solvent-free condition. This procedure avoids the use of precious metals and the heterogeneous
氧化石墨烯(GO)与四正丁基溴化铵(TBAB)结合使用,可在单个反应容器中作为有效的催化剂,用于一锅顺序将羟醛偶联/氮杂-迈克尔加成至查耳酮。苯甲醛和苯乙酮就地偶联生成相应的查耳酮,然后在无溶剂条件下进行氮杂-迈克尔加成反应。该程序避免了贵金属的使用,GO的异质性通过简单过滤催化剂简化了产物的纯化和分离。