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The preparation of phenacylpyrazoles, acylpyrazoles, imidazolylisoxazoles and imidazolylpyrazoles from c(α)‐dianions of oximes, phenylhydrazones and acylhydrazones
Author(s) -
Huff Ann M.,
Hall Howard L.,
Smith Melanie J.,
O'Grady Sheila A.,
Waters Frank C.,
Fengl Richard W.,
Welsh Jeffery A.,
Beam Charles F.
Publication year - 1985
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.5570220259
Subject(s) - lithium diisopropylamide , chemistry , lithium (medication) , organic chemistry , medicinal chemistry , ion , medicine , deprotonation , endocrinology
C (α), O ‐Dilithiooximes, C (α), N ‐dilithiophenylhydrazones, or C (α), N ‐dilithioacylhydrazones were prepared in an excess of lithium diisopropylamide (LDA) and condensed with a variety of esters followed by acid‐cyclization to give substituted isoxazoles and pyrazoles.