Synthesis of Unsymmetrical Diarylureas via Pd-Catalyzed C–N Cross-Coupling Reactions
摘要:
A facile synthesis of unsymmetrical N,N'-diarylureas is described. The utilization of the Pd-catalyzed arylation of ureas enables the synthesis of an array of diarylureas in good to excellent yields from benzylurea via a one-pot arylation-deprotection protocol, followed by a second arylation.
Synthesis of Unsymmetrical Diarylureas via Pd-Catalyzed C–N Cross-Coupling Reactions
摘要:
A facile synthesis of unsymmetrical N,N'-diarylureas is described. The utilization of the Pd-catalyzed arylation of ureas enables the synthesis of an array of diarylureas in good to excellent yields from benzylurea via a one-pot arylation-deprotection protocol, followed by a second arylation.
Parallel Synthesis of Ureas and Carbamates from Amines and CO<sub>2</sub> under Mild Conditions
作者:Scott L. Peterson、Sabrina M. Stucka、Christopher J. Dinsmore
DOI:10.1021/ol100259j
日期:2010.3.19
A mild and efficient library synthesis technique has been developed for the synthesis of ureas and carbamatesfrom carbamic acids derived from the DBU-catalyzed reaction of amines and gaseous carbondioxide. Carbamic acids derived from primary amines reacted with Mitsunobu reagents to generate isocyanates in situ which were condensed with primary and secondaryamines to afford the desired ureas. Similarly
Synthesis of Unsymmetrical Diarylureas via Pd-Catalyzed C–N Cross-Coupling Reactions
作者:Simon Breitler、Nathan J. Oldenhuis、Brett P. Fors、Stephen L. Buchwald
DOI:10.1021/ol201210t
日期:2011.6.17
A facile synthesis of unsymmetrical N,N'-diarylureas is described. The utilization of the Pd-catalyzed arylation of ureas enables the synthesis of an array of diarylureas in good to excellent yields from benzylurea via a one-pot arylation-deprotection protocol, followed by a second arylation.