Heterocyclic Compounds
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ChemInform Abstract: Heterocycles from Carbohydrate Precursors. Part 26. The Scope of the Reactions of Hydrazines and Hydrazones.
First published: November 4, 1986
Abstract
Oxidative cyclization of the thiosemicarbazone (I) (obtained by treatment of D-galactose with 4-(p-chlorophenyl)-thiosemicarbazide in refluxing aqueous ethanol; yield 70%) gives the title compound (II), the periodate oxidation of which affords the aldehyde (IV).
ChemInform Abstract
Oxidative cyclization of the thiosemicarbazone (I) (obtained by treatment of D-galactose with 4-(p-chlorophenyl)-thiosemicarbazide in refluxing aqueous ethanol; yield 70%) gives the title compound (II), the periodate oxidation of which affords the aldehyde (IV). The latter is converted into the compounds (V)-(X) [no yields given for (IX) and (Xa)].
