An inexpensive and efficient catalyst system for synthesis of aryl ethers has been developed by using 20 mol% CuI as the catalyst, 30 mol% dimethylaminomethylphosphonic acid derivatives as the new ligands, K2CO3 as the base and toluene as the solvent. This is the first example using aminophosphonates as the ligands for Ullmann ether coupling reaction.
一种廉价且高效的催化剂系统用于合成芳基醚,使用20 mol%的CuI作为催化剂,30 mol%的
二甲氨基甲基膦酸衍
生物作为新
配体,K2CO3作为碱,
甲苯作为溶剂。这是首次将
氨基膦酸酯作为Ullmann醚偶联反应的
配体。