Preparation process of .beta.-chloroalanine

Details Preparation process of .beta.-chloroalanine Preparation process of .beta.-chloroalanine

C - Chemistry, Metallurgy

07

C

260/525.1

C07C 227/14 (2006.01)

Patent

CA 1183869

ABSTRACT .beta.-Chloroalanine is prepared by reacting in an aqueous medium an aziridine-2-carboxylate with hydrogen chloride in an amount of 2.0-5.0 moles per mole of the aziridine-2-carboxyalte and causing the thus-formed .beta.-chloroalanine to selectively crystallize out from the liquid reaction mixture. Since the solution recovered after the isolation of the crystallized .beta.-chloroalanine still contains .beta.-chloroalanine and by-produced .alpha.-chloro- .beta.-alanine dissolved therein, they may be converted into an aziridine-2-carboxylate by treating them with a base to recirculate it for reuse.

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