Synlett

Phenyl 4, 5-dichloro-6-oxopyridazine-1 (6H)-carboxylate as carbonyl source: facile and selective synthesis of carbamates and ureas under mild conditions

…, MJ Kim, SE Park, JJ Kim, BR Kim, SG Lee, YJ Yoon

Index: Lee, Hyung-Geun; Kim, Min-Jung; Park, Song-Eun; Kim, Jeum-Jong; Kim, Bo Ram; Lee, Sang-Gyeong; Yoon, Yong-Jin Synlett, 2009 , # 17 p. 2809 - 2814

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Citation Number: 11

Abstract

Abstracts: The selective syntheses of carbamates, symmetric ureas, and unsymmetrical ureas have been accomplished by the reaction of amines with phenyl 4, 5-dichloro-6- oxopyridazine-1 (6H)-carboxylate as a carbonyl source under mild conditions. It is noteworthy that this process is mild, economic, and convenient. Key words: carbamate, symmetric urea, unsymmetric urea, carbonyl source, pyridazinone

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