Synthesis of some pyrazole derivatives having l-threo and d-erythro side chains |
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Authors: | El Sayed H. El Ashry Yeldez El Kilany Farrag Singab |
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Affiliation: | Chemistry Department, Faculty of Science, Alexandria University, Alexandria Egypt |
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Abstract: | The mixed bis(arylhydrazones) of l-threo-2,3-hexodiulosono-1,4-lactone rearrange into pyrazolediones. Mono- and bis-(arylhydrazones) of isoascorbic acid were prepared; the latter are present in two forms that afford the same pyrazoledione. Acetylation, benzoylation, and periodate oxidation of these pyrazolediones were studied, and some condensation products from the pyrazole aldehyde were prepared. Some of the i.r. and mass-spectral data were discussed. |
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Keywords: | To whom inquiries should be addressed. |
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