Synthesis of 2-Methyl-7-phenyl-5,8-dihydro-4H-pyrzylo-[5,1-d][1,2,5]triazepin-4-one

Аннотация

An approach is developed to the synthesis of 2-methyl-7-phenyl-5,8-dihydro-4H-pyrazolo[5,1-d]-[1,2,5]triazepin-4-one, based on the recyclization of 2-methyl-6-phenyl-4H-pyrazolo[5,1-c][1,4]oxazin-4-one with hydrazine.