Unprecedented “In Water” Imidazole Carbonylation: Paradigm Shift for Preparation of Urea and Carbamate
作者:Kamlesh J. Padiya、Sandip Gavade、Bhavana Kardile、Manojkumar Tiwari、Swapnil Bajare、Madhav Mane、Vivek Gaware、Shaji Varghese、Dipak Harel、Suresh Kurhade
DOI:10.1021/ol301009d
日期:2012.6.1
The first "In Water" Imidazolecarbonylation of amine is described. A one pot reaction of carbonylimidazolide in water with a nucleophile provides an efficient and general method for the preparation of urea, carbamates and thiocarbamates. Use of an anhydrous solvent and an inert atmosphere could be avoided. Product precipitate out from the reaction mixture and can be obtained In high purity by filtration, resulting in a simple and scalable method.