Abstract
Acetylation of D-galactose phenyl- and ( p-chlorophenyl)-hydrazone with boiling acetic anhydride, or with acetyl chloride in pyridine, afforded N-acetyl- O-acetyl derivatives, whereas with the ( p-nitrophenyl)hydrazone, only the O-acetyl derivative was obtained. Benzoyl chloride, being a stronger acylating agent, caused the N-benzoylation of D-galactose ( p-nitrophenyl)hydrazone, and, with hydrazone penta-acetates, gave the N-benzoylated O-acetylated derivatives. Some new acylhydrazones were prepared, but, because of their enolization, they failed to undergo the formazan reaction, and their acetates could not be converted into azoethylene derivatives.
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