One-pot and stereoselective synthesis of 2,3-dihydro-1,5-benzodiazepin-2-one with a phosphanylidene or phosphono-succinate substituent
作者:Abdolali Alizadeh、Nasrin Zohreh、Long-Guan Zhu
DOI:10.1016/j.tet.2009.01.091
日期:2009.3
The one-potsynthesis of 2,3-dihydro-1,5-benzodiazepins-2-one bearing phosphanylidene (ylide) or phosphono-succinate substituent is described. In this four-component reaction, benzodiazepine derived from condensation of o-phenylenediamine and diketene is trapped with the trialkyl phosphite–dialkyl acetylenedicarboxylate zwitterion. In the presence of H2O, the ylide functional group is hydrolyzed to