Mono- and bis-hydrazone of D-erythrose and 2,3-Dioxo-y-butyrolactone |
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Authors: | Hassan S. El Khadem Zaki El Shafel El Sayed Et. Ashry Mohamed El Sadek |
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Affiliation: | Department of Chemistry and Chemical Engineering, Michigan Technological University, Houghton, Michigan 49931 U.S.A;Chemistry Department, Faculty of Science, Alexandria University, Alexandria Egypt |
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Abstract: | Aryl-and benzoyl-hydrazones of 2,4-O benzylidene D-erythrose were prepared and acetylated. D-glycero-Tetrulose phenyl-and p-substitute-phenyl-osazones were acylated with acetyl chloride and benzoyl chloride to give the N-acyl-di-O-acyl derivatives, which, on boiling with acetic anhydride, afforded the 1-aryl-3-formylpyrazole N-acetylarylhydrazones. The bis(hydrazones) of 2,3-dioxo-y-butyrolactone are partially hydrolyzed with copper(II) chloride to give the 2-hydrazono-3-oxo-y-butyrolactones, which, on treatment with alkali, rearrange to give the 1-aryl-3-hydroxymethylpyrazoline-4,5-dione 4-arylhydrazones. |
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