去甲伪麻黄碱

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 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°. [α]D20 + 33° From the mother liquor of the racemate splitting by evaporation to dryness and treatment with isopropanolic HCl there

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 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°. [α]D20 + 33° From the mother liquor of the racemate splitting by evaporation to dryness and treatment with isopropanolic HCl there

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 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°. [α]D20 + 33° From the mother liquor of the racemate splitting by evaporation to dryness and treatment with isopropanolic HCl there

反应条件: temp:0.00; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: 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°. [α]D20 + 33° From the mother liquor of the racemate splitting by evaporation to dryness and treatment with isopropanolic HCl there