qtrinmnn. rt
cii.
vent was evaporated. The residue was recrystallized from toluene stirred at 10' tor 1 hr. then an additional 2 hr at 2%5',and then t o give 6.6 g (55%)of 98, mp 221-2'23". added slowly to a mixture of 350 g of ice and 350 ml of concenI-Ethyl-4,ti-dihydro-3-methyl-~-(~~,~~,~~-trifluoro-~i-tolyl)pyratrated K H 4 0 H . The yellow precipitate wah collected. washed zoio[4,3-e][1,4]diazepin-5(1 H)-one (111). Method L. Compound with H20. and dried at 50" in L'ucuo t o give Is.:! 2 W'%!(11 1 1 0 . m p 155-157" dec. Hydro1 gle amino krtrinc l;(i i n 7.
