New PDF release: Advances in Heterocyclic Chemistry, Vol. 95

By Alan Katritzky

ISBN-10: 0123742722

ISBN-13: 9780123742728

The definitive serial within the box - on account that 1960. * offers up to date fabric on a quick turning out to be and hugely topical topic quarter * comprises the newest study protecting a large choice of heterocyclic subject matters * Written through major specialists and designed as a instruction manual for college students and and educational researchers.

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Additional info for Advances in Heterocyclic Chemistry, Vol. 95

Example text

Thus, condensation of 128 with benzylamine 120a and arylamines 120b–e in hot ethanol afforded the (E/Z)-4-iminopyrazol-3-ones 133a–e. Condensation of the carbanion derived from the acetyl group of 128 with arylaldehydes 129f–j in a basic ethanolic medium afforded 4-(3-arylacryloyl)pyrazol-3-ones 130f–j. The latter were heated in ethanol with arylamines 131k,l to afford (E/Z)-4-[1-(4-arylphenylimino)-3-arylallyl]pyrazol3-ones 132m–p. Condensation of 4-aminobenzenesulfonamide 135a and 4-amino-N-(heteroaryl)benzenesulfonamides 135b–f with 4-benzoylpyrazol-3-one 134 was reported by Maurya et al.

A. 4-[(2-Nitrophenyl)thio]pyrazol-3-ones. . . . . . . . . . . . . . B. 3-(1,5-Dimethyl-3-oxo-2-phenylpyrazol-4-yl)-3-oxopropionitrile . . . . . C. [5-Oxo-1-arylpyrazol-3-yl]carbamic Acid 4-Nitrophenyl Ester. . . . . . D. 5-Hydroxy-1,2-diphenylpyrazol-3-one . . . . . . . . . . . . . . E. 5-Methyl-4,4-dinitro-2-(4-nitrophenyl)pyrazol-3-one . . . . . . . . . XII. Elimination . . . . . . . . . . . . . . .

E. 5-Methyl-4,4-dinitro-2-(4-nitrophenyl)pyrazol-3-one . . . . . . . . . XII. Elimination . . . . . . . . . . . . . . . . . . . . . . . . A. Deamination via Diazotization . . . . . . . . . . . . . . . . B. Deformylation . . . . . . . . . . . . . . . . . . . . . . C. Deprotection and Decarboxylation . . . . . . . . . . . . . . . D. By Ring Formation . . . . . . . . . . . . . . . . . . . . XIII.

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Advances in Heterocyclic Chemistry, Vol. 95 by Alan Katritzky


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