1-[6-chloro-5-(o-fluorophenyl)-2,3-dihydro-1,3,3-trimethyl-2-oxo-1H-1,4-benzodiazepin-7-yl]-3-(2-hydroxyethyl)urea 、
[5-(o-chlorophenyl)-2,3-dihydro-1-(2-hydroxyethyl)-3,3-dimethyl-2-oxo-1H-1,4-benzodiazepin-7-yl]isocyanate 以From 6.5 g (0.018 mol) of 7-amino-5-(o-chlorophenyl)-1,3-dihydro-1-(2-hydroxyethyl)-3,3-dimethyl-2H-1,4-benzodiazepin-2-one there is obtained, in analogy to the details in paragraph (b) of Example 4, via [5-(o-chlorophenyl)-2,3-dihydro-1-(2-hydroxyethyl)-3,3-dimethyl-2-oxo-1H-1,4-benzodiazepin-7-yl]isocyanate, 1的产率得到7-amino-5-(o-chlorophenyl)-1,3-dihydro-1-(2-hydroxyethyl)-3,3-dimethyl-2H-1,4-benzodiazepin-2-one