Document Type and Number:
Japanese Patent JPH0513948
Kind Code:
B2
Abstract:
Preparation of ethyl {6-[ethyl-(2-hydroxypropyl)amino]-3-pyridazinyl} hydrazino carboxylate is disclosed from 3-chloro-6-hydrazinopyridazine in protected form, which is oxidized to yield the corresponding azo derivative, which is treated with ethyl-(2-hydroxypropyl)amine in the presence of strong bases, the corresponding amino derivative being subjected to reduction and deprotection, and finally acylated to yield ethyl {6-[ethyl-(2-hydroxypropyl)amino]-3-pyridazinyl} hydrazinocarboxylate.
Inventors:
KARURO FUARINA
JIORUJIO PITSUFUERI
MARIO PINTSUA
JIORUJIO PITSUFUERI
MARIO PINTSUA
Application Number:
JP23638487A
Publication Date:
February 23, 1993
Filing Date:
September 22, 1987
Export Citation:
Assignee:
I ETSUSE ETSUFUE SPA
International Classes:
C07D237/20
Next Patent: JPH0513949