| 摘要 |
Preparation of (R)-(-)-2-hydroxy-2-(2-chlorophenyl)acetic acid (A) comprises resolution of racemic 2-hydroxy-2-(2-chlorophenyl)acetic acid with a substituted amine, as a resolving agent. Preparation of (R)-(-)-2-hydroxy-2-(2-chlorophenyl)acetic acid (A) comprises resolution of racemic 2-hydroxy-2-(2-chlorophenyl)acetic acid (I) with a substituted amine of formula R 2>-CH(R 3>)-CH(NH 2)-R 1> (II), as a resolving agent. R 1>hydroxy-methyl or carbonyl; R 2>phenyl, nitrophenyl or 1-4C alkyl substituted with an amino; R 3>H or OH. Independent claims are also included for: (a) (1S,2S)-(+)-1-phenyl-2-amino-1,3-propanediole (S)-(+)-2-hydroxy-2-(2-chlorophenyl)acetic acid salt; (b) (1R,2R)-treo-(-)-1-(4-nitrophenyl)-2-amino-1,3-propanediole (R)-(-)-2-hydroxy-2-(2-chlorophenyl)acetic acid salt; and (c) (R)-(-)-2-hydroxy-2-(2-chlorophenyl)acetic acid-L-(+)-lysine salt. |
