WebApr 12, 2024 · An efficient preparation of unsymmetrical ureas and thioureas Feb 7, 2024 Nickel-catalyzed cyanation of (hetero)aryl halides Jan 19, 2024 An efficient ... WebApr 14, 2024 · A green and efficient visible-light promoted oxidative desulphurisation protocol has been proposed for the construction of unsymmetrical ureas under mild …

Bromodimethylsulfonium bromide (BDMS)-mediated Lossen …

WebNov 18, 2008 · A general method for the preparation of bis-ureas from bis(o-nitrophenyl) carbonate has been developed. Directional urea synthesis is achieved by sequential … WebA tandem synthesis of unsymmetrical ureas (N-aryl-N′-pyridylurea and N,N′-bipyridylurea) from aryl- or pyridyl carboxamides and aminopyridines via Hofmann rearrangement has … lower weight set point

Synthesis of unsymmetrical biaryl ureas from N …

WebJul 29, 2012 · Unsymmetrical ureas 2a–e were prepared by reactions of 1a–e with aniline. The reactions proceeded rapidly (<30 min) and in good yields (Table 1). 1f, which does not … WebAn "on-water" reaction of (thio)isocyanates with amines enables a facile, sustainable, and chemoselective synthesis of unsymmetrical (thio)ureas. ... Selective and convenient … WebSep 1, 2005 · 129 For the effective synthesis of unsymmetrical tetrasubstituted ureas, Batey and co-workers formed imidazolium salts and developed effective carbamoyl transfer … lower wensleydale business network