4,5-Substituted Pyridazines. III. Oxidation and Solvolysis of 4-Methyl-3,6-dichloropyridazine.

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概要

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• 1) 4-Methyl-6-chloro-3-pyridazinol (IIIa) and 5-methyl-6-chloro-3-pyridazinol (IIIb) were obtained from 4-methyl-3,6-dichloropyridazine (I) by refluxing with glacial acetic acid. 2) 4-Carboxy-6-chloro-3-pyridazinol (II) was formed from 4-methyl-3,6-dichloropyridazine (I) and 4-methyl-6-chloro-3-pyridazinol (IIIa) by oxidation with potassium dichromate in conc. sulfuric acid and it was led to ester (VI), hydrazide (VII), and amide (VIII) derivatives. 3) 5-Carboxy-6-chloro-3-pyridazinol (IX) was also obtained by similar procedure from 5-methyl-6-chloro-3-pyridazinol (IIIb).

• 公益社団法人日本薬学会の論文
• 1957-12-20

著者

• 倉石 典

  Parmaceutical Faculty University Of Nagasaki

• 倉石 典

  Pharmaceutical Faculty, University of Nagasaki

関連論文

• 4,5-Substituted Pyridazines. III. Oxidation and Solvolysis of 4-Methyl-3,6-dichloropyridazine.
• 4,5-Substituted Pyridazines. II.
• 4,5置換ピリダチン類(第1報)
• 4-Aminopyridazineの合成
• 4,5-Disubstituted Pyridazines. VIII. Hydrolysis of 2-Phenyl-6-chlorooxazolo[5,4-c]pyridazine
• 4,5-Substituted Pyridazines. VII. Synthesis and Acylation of 3,4-Dichloro-5-aminopyridazine.
• 4,5-Substituted Pyridazines. VI. Infrared Absorption and Structure of 4-and 5-Carboxy-6-chloro-3-pyridazinol.
• 4,5-Substituted Pyridazines. V. Acylation of 4-Amino-3,6-dichloropyridazine.
• 4,5-Substituted Pyridazines. IV. The Effect of Some Substituents at the 4-Position on the Ultraviolet Absorption Spectrum of 3,6-Dichloropyridazine.

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