Aldonic lactones hydrazides

Aldonic 1,4-lactone, III, 131 Aldonic 1,5-lactone, III, 130 Aldonic lactones, from aldonic phenyl-hydrazides, I, 22... 

Aldonic acids form crystalline esters, amides, hydrazides, and benzimidazoles. Many of these derivatives, as well as the lactones, have been valuable... 

Isolation of Aldonic Acid Lactones through their Hydrazides, Alva Thompson and M. L. Wolfrom,/. Amer. Chem. Soc., 68, 1509-1510 (1946). 

The aldonic acids are the initial oxidation products produced from aldoses by most oxidants and are usually isolated as the metallic salts or the lactones. As a result of the ease with which the crystalline lactones, salts, amides, hydrazides, and other derivatives can be formed, aldonic acids are... 

The salts and lactones of the aldonic and saccharic acids react readily with phenylhydrazine to form the hydrazides 48) The low solubility and ease of crystallization of the hydrazides have led to their use for the characterization and isolation of the acids. Aniline reacts in a manner similar to phenylhydrazine. 

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