procedure for the manufacture of 3 - (5 - cyclopropyl - 1,2,4 - oxadiazol - 3 - yl) - 5,6-dihydro-5 - methyl 6 - oxo - 4h - imidazo (1,5-a) (1,4) benzodiazepine and 3 - cyclopropyl - 3 - isocyanomethyl - 1,2,4 - oxadiazol for use as starting materials for the procedure

摘要

Process for preparing 3-(5-cyclopropyl-1,2,4-oxadiazol-3- yl)-5,6-dihydro-5-methyl-6-oxo-4H-imidazo(1,5- a)(1,4)benzodiazepine by reacting a compound of the formula IMAGE where Y is an eliminable group, with a compound of the formula IMAGE and 3-cyclopropyl-3-isocyanomethyl-1,2,4-oxadiazole for use in the process.