An Effective Heterogeneous Copper Catalyst System for C–N
Coupling and Its Application in the Preparation of
2-Methyl-4-methoxydiphenylamine (MMDPA)
作者:Manna Huang、Zhou Yi、Yiqian Wan、Xinhai Zhu
DOI:10.1055/s-0037-1609578
日期:2018.10
-1H-pyrrole-2-carbohydrazide (PSAP) has been established for Ullmann type C–N coupling based on the homogeneous catalyst system N′,N′-diphenyl-1H-pyrrole-2-carbohydrazide/CuI. This heterogeneous catalyst system maintained the catalytic effectiveness of the homogeneous catalyst. A variety of functionalized aryl bromides can be efficiently aminated with aryl amines and aliphatic amines with high selectivity
摘要 由CuI和聚苯乙烯负载的N(-(4-(氨基甲基)萘-1-基)-N(-苯基-1 H-吡咯-2-碳酰肼(PSAP))组成的可配体循环利用的对环境无害的非均相催化剂体系基于均相催化剂体系N ′,N′-二苯基-1 H建立了Ullmann C–N型偶联-吡咯-2-碳酰肼/ CuI。这种非均相催化剂体系保持了均相催化剂的催化效力。各种官能化的芳基溴化物可以被芳胺和脂肪族胺有效地胺化,而胺对醇的选择性高。此外,该催化剂体系的实际应用以促进可商购的4-甲氧基-2-甲基苯胺和溴苯以10 mmol规模反应,提供了2-甲基-4-甲氧基二苯胺(MMDPA),收率93%,具有该方法是用于后处理和纯化的简单操作。 由CuI和聚苯乙烯负载的N(-(4-(氨基甲基)萘-1-基)-N(-苯基-1 H-吡咯-2-碳酰肼(PSAP))组成的可配体循环利用的对环境无害的非均相催化剂体系基于均相催化剂体系N ′,N′-二苯基-1