Studies on Isopyrazole Derivatives and Related Compounds. I. Structure of Condensation Product of Nitrobenzylideneacetylacetone with Hydrazine Dihydrochloride
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Condensation of nitrobenzylideneacetylacetone (Ia, b), which have double bond on 3 position of acetylacetone, with hydrazine dihydrochloride in several alcoholic solvents afforded 3,5-dimethyl-4-nitrobenzylideneisopyrazolium alkyl chlorides. On the other hand, reaction of Ia, b with hydrazine dihydrochloride in acetonitrile gave 3,5-dimethyl-4-nitrobenzylideneisopyrazole (IIa, b). These structures and chemical natures were examined.
- 公益社団法人日本薬学会の論文
- 1974-01-25
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