Methanol → (R)-2-Amino-1-(3-chlorophenyl)ethanol

Participants

Reaction Steps

To 20 ml of methanol were added 1.70 g of the concentrate obtained in the same manner as in Example 295, containing 1.29 g (7.50 mmol) of 2-amino-1-(3-chlorophenyl)ethanol, and 2.88 g (7.50 mmol) of L-di-p-toluoyltartaric acid (hereinafter abbreviated as L-PTTA), and the resultant mixture was heated for dissolution and added with 20 ml of 4-methyl-2-pentanone. The mixture was cooled to room temperature and left over night to give crystals. The crystals precipitated was isolated by filtration to afford 1.69 g (2.63 mmol) of (R)-2-amino-1-(3-chlorophenyl)ethanol.L-PTTA salt. The yield of the compound relative to (R)-2-amino-1-(3-chlorophenyl)ethanol in the concentrate was 70.1%.

Provenance & Evidence