Process for producing l-ascorbic acid-2-sulfate

Details Process for producing l-ascorbic acid-2-sulfate Process for producing l-ascorbic acid-2-sulfate

C - Chemistry, Metallurgy

07

D

260/293.2, 260/3

C07D 307/62 (2006.01)

Patent

CA 1056838

ABSTRACT OF THE DISCLOSURE The present invention provides a process for producing mono- or di-alkali metal salt or alkaline earth metal salt of L-ascorbic acid-2-sulfate which comprises reacting L-ascorbic acid having a protective substituent in the 5- and 6-positions derived from a ketone or aldehyde with the sulfating agent and dimethyl formamide and neutralizing the product obtained with an alkali metal hydroxide or an alkaline earth metal hydroxide and removing the protective substituent at 5- and 6-positions. The invention also includes a method of producing eggs having shells of improved strength which comprises administering to laying fowl a mono or di-alkali metal salt or alkaline earth metal salt of L-ascorbic acid-2-sulfate. The invention still further includes as novel compounds sodium and calcium salts of L-ascorbic acid-2-sulfate.

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