The preparation of phenacylpyrazoles,acylpyrazoles, imidazolylisoxazoles and imidazolylpyrazoles from c(α)-dianions of oximes,phenylhydrazones and acylhydrazones |
| |
Authors: | Ann M Huff Howard L Hall Melanie J Smith Sheila A O'Grady Frank C Waters Richard W Fengl Jeffery A Welsh Charles F Beam |
| |
Abstract: | 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. |
| |
Keywords: | |
|
|