An improved synthesis of pyrazolo[3,4-b][1,5]benzoxazepine, -benzothiazepine and -benzodiazepine derivatives via a convenient one-pot synthesis

Authors
Abd El Latif, FM
Citation
Fm. Abd El Latif, An improved synthesis of pyrazolo[3,4-b][1,5]benzoxazepine, -benzothiazepine and -benzodiazepine derivatives via a convenient one-pot synthesis, J HETERO CH, 37(6), 2000, pp. 1659-1662
Citations number
11
Categorie Soggetti
Organic Chemistry/Polymer Science
Journal title
JOURNAL OF HETEROCYCLIC CHEMISTRY
ISSN journal
0022152X → ACNP
Volume
37
Issue
6
Year of publication
2000
Pages
1659 - 1662
Database
ISI
SICI code
0022-152X(200011/12)37:6<1659:AISOP->2.0.ZU;2-X
Abstract
An improved and simple method for the preparation of pyrazolo[3,4-b][1,5]be nzoxazepine, -benzothiazepine and -benzodiazepine derivatives was establish ed by the reaction of 5-chloro-1-phenylpyrazole-4-carbaldehydes, ethyl 3-(5 -chloro-1,3-diphenylpyrazol-4-yl)-2-cyanoacrylate and 1,4-dincetyl-3-methyl -2-pyrazolin-5-one with o-aminophenol derivatives and o-phenylendiamine.