It is known that hydrazine hydrate is a reducing agent which can reduce aldehydes and ketones to hydrocarbon requir- ing relatively harsh conditions,1 aromatic nitro compounds to aromatic amines2 and alkyl halides to corresponding alkanes in the presence of metal catalyst, respectively.2,3 In this communi- cation, we like to report a novel and efficient synthesis of 2- (un)substituted-4-aminopyridazin-3-ones by reduction of 2- (un)substituted-4,5- ...
