(±)-克伦特罗

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:0.00; pressure:0.00; stir:

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture containing 2.5 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol, 25 ml of pyridine and 10 ml of acetic anhydride is stirred for three hours and evaporated to dryness in vacuo with heating up to 70° C. The residue is treated with ice, 100 ml of CH2Cl2 and 50 ml of 10% NaOH solution. evaporated to dryness in vacuo The residue is treated with ice, 100 ml of CH2Cl2 and 50 ml of 10% NaOH solution

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture containing 2.5 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol, 25 ml of pyridine and 10 ml of acetic anhydride is stirred for three hours and evaporated to dryness in vacuo with heating up to 70° C. The residue is treated with ice, 100 ml of CH2Cl2 and 50 ml of 10% NaOH solution. evaporated to dryness in vacuo The residue is treated with ice, 100 ml of CH2Cl2 and 50 ml of 10% NaOH solution

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

实验步骤: In 100 ml of methanol, 10 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol is stirred in an ice bath and dry HCl gas is introduced into the solution. After saturation of the solution, the mixture is stirred at room temperature for an hour and evaporated to dryness. The solid is then stirred in ethyl acetate to afford the title product, which is collected by filtration. evaporated to dryness The solid is then stirred in ethyl acetate

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

实验步骤: In 100 ml of methanol, 10 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol is stirred in an ice bath and dry HCl gas is introduced into the solution. After saturation of the solution, the mixture is stirred at room temperature for an hour and evaporated to dryness. The solid is then stirred in ethyl acetate to afford the title product, which is collected by filtration. evaporated to dryness The solid is then stirred in ethyl acetate

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

实验步骤: Under N2 atmosphere, 27.72 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol is added to 200 ml of thionyl chloride stirred at 0°-5° C. After addition is completed, the reaction mixture is stirred at ambient temperature for 3 hours. Subsequently, the mixture is evaporated to dryness in vacuo to afford 37.34 g of yellow solid, which is used as is. After addition the reaction mixture is stirred at ambient temperature for 3 hours Subsequently, the mixture is evaporated to dryness in vacuo

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture containing 2.5 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol, 25 ml of pyridine and 10 ml of acetic anhydride is stirred for three hours and evaporated to dryness in vacuo with heating up to 70° C. The residue is treated with ice, 100 ml of CH2Cl2 and 50 ml of 10% NaOH solution. The CH2Cl2 phase is separated, and the aqueous portion is further extracted with CH2CL2 (2×50 ml). The combined CH2CL2 solutions are dried (Na2SO4) and evaporated to dryness to afford a solid after scratching. The solid is washed with hexane and collected to afford 2.61 g of the title compound, mp 126°-136° C. evaporated to dryness in vacuo The residue is treated with ice, 100 ml of CH2Cl2 and 50 ml of 10% NaOH solution The CH2Cl2 phase is separated the aqueous portion is further extracted with CH2CL2 (2×50 ml) The combined CH2CL2 solutions are dried (Na2SO4) evaporated to dryness to afford a solid The solid is washed with hexane collected

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

实验步骤: In 100 ml of methanol, 10 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol is stirred in an ice bath and dry HCl gas is introduced into the solution. After saturation of the solution, the mixture is stirred at room temperature for an hour and evaporated to dryness. The solid is then stirred in ethyl acetate to afford the title product, which is collected by filtration. evaporated to dryness The solid is then stirred in ethyl acetate

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

实验步骤: In 100 ml of methanol, 10 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol is stirred in an ice bath and dry HCl gas is introduced into the solution. After saturation of the solution, the mixture is stirred at room temperature for an hour and evaporated to dryness. The solid is then stirred in ethyl acetate to afford the title product, which is collected by filtration. evaporated to dryness The solid is then stirred in ethyl acetate

反应条件: temp:70.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

实验步骤: A mixture containing 2.5 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol, 25 ml of pyridine and 10 ml of acetic anhydride is stirred for three hours and evaporated to dryness in vacuo with heating up to 70° C. The residue is treated with ice, 100 ml of CH2Cl2 and 50 ml of 10% NaOH solution. The CH2Cl2 phase is separated, and the aqueous portion is further extracted with CH2CL2 (2×50 ml). The combined CH2CL2 solutions are dried (Na2SO4) and evaporated to dryness to afford a solid after scratching. The solid is washed with hexane and collected to afford 2.61 g of the title compound, mp 126°-136° C. evaporated to dryness in vacuo The residue is treated with ice, 100 ml of CH2Cl2 and 50 ml of 10% NaOH solution The CH2Cl2 phase is separated the aqueous portion is further extracted with CH2CL2 (2×50 ml) The combined CH2CL2 solutions are dried (Na2SO4) evaporated to dryness to afford a solid The solid is washed with hexane collected

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

实验步骤: In 100 ml of methanol, 10 g of 4-amino-α-[(tert-butylamino)methyl]-3,5-dichlorobenzyl alcohol is stirred in an ice bath and dry HCl gas is introduced into the solution. After saturation of the solution, the mixture is stirred at room temperature for an hour and evaporated to dryness. The solid is then stirred in ethyl acetate to afford the title product, which is collected by filtration. evaporated to dryness The solid is then stirred in ethyl acetate