Journal of Heterocyclic Chemistry p. 1659 - 1662 (2000)
Update date:2022-09-26
Topics:
Abd El Latif
An improved and simple method for the preparation of pyrazolo[3,4-b][1,5]benzoxazepine, -benzothiazepine and -benzodiazepine derivatives was established by the reaction of 5-chloro-1-phenylpyrazole-4-carbaldehydes, ethyl 3-(5-chloro-1,3-diphenylpyrazol-4-yl)-2-cyanoacrylate and 1,4-diacetyl-3-methyl-2-pyrazolin-5-one with o-aminophenol derivatives and o-phenylendiamine.
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