Process for the optical resolution of...

Details Process for the optical resolution of... Process for the optical resolution of...

C - Chemistry, Metallurgy

07

C

260/531.9

C07C 319/28 (2006.01) C07C 323/63 (2006.01) H04N 3/20 (2006.01) C07C 323/52 (2006.01)

Patent

CA 2030375

"PROCESS FOR THE OPTICAL RESOLUTION OF THREO-2-HYDROXY-3- (2'-AMINOPHENYLTHIO)-3-(4"-METHOXYPHENYL)-PROPIONIIC ACID" Abstract The present invention relates to a process for the separation of the enantiomers of threo-2-hydroxy-3-(2'- aminophenylthio)-3-(4"-methoxyphenyl)-propionic acid, which is an important intermediate in the synthesis of pharmacologically active compounds, by means of the direct crystallization of the relevant cyclohexylaminic salt. According to a preferred form of practical embodiment of the present invention, the optically pure acid is recovered as the hydrochloride of the corresponding methyl ester

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