Download full text in PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... Racemic 3-amino-1,3-dihydro-5-phenyl-2H-1,4-benzodiazepin-2-one, 2, was prepared in four steps utilizing a novel mercuric ion assisted ammonia displacement of an N-acyl alkylthioglycine amide 5. ... The title compound was prepared in four step utilizing a mercuric ion assisted ...