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Synthesis of some 4 H ,10 H [1]benzoxepino[3,4‐ c ]pyrazol‐4‐one derivatives
Author(s) -
Deshayes Christian,
Chabannet Michel,
Gelin Suzanne
Publication year - 1984
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570210206
Subject(s) - chemistry , stereochemistry , medicinal chemistry
1 H (or 2 H )4 H 10 H [1]Benzoxepino[3,4‐ c ]pyrazol‐4‐ones were prepared from phenoxymethylpyrazolecarboxylic acids which in turn were synthesized from simple starting materials. Different pathways to allow the predominant formation of the N‐1 or N‐2 substituted derivatives are described. The isomeric 1 or 2‐substituted structures were supported by 13 C‐nmr.