New Synthesis of 1,3-Dihydro-1,4-benzodiazepin-2(2<i>H</i>)-ones and 3-Amino-1,3-dihydro-1,4-benzodiazepin-2(2<i>H</i>)-ones: Pd-Catalyzed Cross-Coupling of Imidoyl Chlorides with Organoboronic Acids
作者:Alan Nadin、José M. Sánchez López、Andrew P. Owens、Dean M. Howells、Adam C. Talbot、Timothy Harrison
DOI:10.1021/jo026860a
日期:2003.4.1
A new approach to the synthesis of 1,4-benzodiazepines and 3-amino-1,4-benzodiazepines, which employs the Pd-catalyzed cross-coupling reaction of an imidoylchloride with an organometallic reagent as the key step, is described. A five-step synthesis of a key intermediate is described and it is shown that in only four further steps (three couplings and a TFA-mediated BOC-deprotection) a wide variety