反应详情

In the manner given in Example 22, a mixture of 1-(2-aminoethyl)-8-chloro-6-(o-chlorophenyl)-4H-s-triazolo[4,3-a][1,4]benzodiazepine, 37% aqueous formaldehyde and acetic acid in acetonitrile is treated with sodium cyanoborohydride and the resulting boron complex is warmed with aqueous ethylenediamine to give 1-[2-(dimethylamino)ethyl]-8-chloro-6-(o-chlorophenyl)-4H-s-triazolo[4,3-a][1,4]benzodiazepine.