Advanced Synthesis & Catalysis

Silica Gel Confined Ionic Liquid+ Metal Complexes for Oxygen??Free Carbonylation of Amines and Nitrobenzene to Ureas

F Shi, Q Zhang, Y Gu, Y Deng

Index: Shi, Feng; Zhang, Qinghua; Gu, Yanlong; Deng, Youquan Advanced Synthesis and Catalysis, 2005 , vol. 347, # 2-3 p. 225 - 230

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Citation Number: 47

Abstract

Abstract A new kind of silica gel confined ionic liquid containing a metal complex as heterogenized catalysts was prepared for the carbonylation of amines and nitrobenzene without molecular oxygen to afford the corresponding ureas with greatly enhanced catalytic activity (TOF exceeded 11000 mol⋅ mol− 1⋅ h− 1), with a much lower amount of ionic liquids being needed, with easy catalyst separation and possible reusability, and ...

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