Process for preparing L-carnosine

Details Process for preparing L-carnosine Process for preparing L-carnosine

1981-07-13

1982-11-16

Schwartz, Richard A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

548344, C07C10352

Patent

active

043594166

ABSTRACT:
Process for preparing L-carnosine by reacting L-histidine and tetrahydro-1,3-thiazin-2,4-dione in an aqueous medium at a selected pH and temperature range followed by removal of carbon oxysulfide at acid pH, removal of water and crystallization of product wherein pH adjustments are made with substituted ammonium hydroxides and organic acids having pKa .ltoreq.3.75.

REFERENCES:
patent: 3846398 (1974-11-01), Hirschmann et al.
Chemical Abstracts, 89:432832 (1978) [Vladzimirskaya, E., et al., Tezisy Dokl. Navchn. Sess. Khim. Tekhnol. Org. Soedin. Serv. Sernistykh Neftei, 14th 1975, 204-205].

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