反应详情

61 grams of this salt were split in a manner analogous to that described in example 1. There were obtained 33 grams of L-3-formyl-2,2,5,5-tetramethyl-thiazolidine-4-carboxylic acid melting at 179° - 180°C.; [α]D20 - 54.4° as well as 26.5 grams of d-phenylpropanolamine.HCl melting point 173°C.; [α]D20 + 33°. From the mother liquor of the racemate splitting by evaporation to dryness and treatment with isopropanolic HCl there were obtained 28 grams (77%) of l-phenylpropanolamine.HCl, melting point 179°C.; [α]D20 - 31.4°.

1. custom[α]D20 + 33°
2. customFrom the mother liquor of the racemate splitting by evaporation to dryness and treatment with isopropanolic HCl there