4,5-Substituted Pyridazines. VII. Synthesis and Acylation of 3,4-Dichloro-5-aminopyridazine.

• 倉石 典

  Pharmaceutical Faculty, University of Nagasaki

抄録

1) The structures of 3,4-dichloro-5-aminopyridazine (VIII), m.p. 178,° and 5,6-dichloro-3-pyridazinol (III), m.p. 203〜204°, were established. (VIII) was obtained from 4-chloro-5-amino-3-pyridazinol (VI) and was identical with the sample derived from 3,4,5-trichloropyridazine ; (IV) was characterized as a convenient intermediate for preparing 5-amino-3-pyridazinol (V) and 3,6-dichloro-4-aminopyridazine (II). 2) Preparations of 5-amino-6-chloro-3-pyridazinol (IV), 3-chloro-4-hydroxy-5-aminopyridazine (XI), and 2-phenyl-7-chloro-oxazolo [4,5-d] pyridazine (XII) obtained from (VIII) and (XI) were reported.

収録刊行物

• Chemical & pharmaceutical bulletin

  Chemical & pharmaceutical bulletin 6 (6), 641-644, 1958-12-15

  公益社団法人日本薬学会

詳細情報

• CRID: 1573105977282835840
• NII論文ID: 110003618072
• NII書誌ID: AA00602100
• ISSN: 00092363
• 本文言語コード: en
• データソース種別:
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