Studies on some B-aroyl- [4 [1,3-disubstituted-2-pyrazolin-5-one]] propionic acids
Egyptian Journal of Chemistry. 1984; 27 (6): 757-65
in English
| IMEMR
| ID: emr-4293
ABSTRACT
Baroylarcylic acids [I] react with 1, 3-disubstituted-2-pyrazolin-5-ones in dry benzene to give the adducts II. Estrification of lid with diazomethane gives the corresponding methyl ester [III]. Reactions of II with hydrazine hydrate and phenylhydrazine afford the corresponding pyridazinones [V and VI]. Dehydration of II yield the butenolides [VII]. The reactions of pyrida-zinones V with anisaldehyde, ethyl bromoacetate, diethyl sulfate and Grignard reagents are also described. The in vitro antibacterial screening reveals substantial activities against Gram-positive and Gram-negative bacteria for compounds lie and lid; while compounds IIa, IIb and Vb are inactive
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Index:
IMEMR (Eastern Mediterranean)
Main subject:
Pyrazoles
Language:
English
Journal:
Egypt. J. Chem.
Year:
1984
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