2-[(3-methoxyphenyl)methylamino]ethanol

反応条件: temp:85.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Next, in toluene (100 ml) were added 2-[(3-methoxyphenyl)methylamino]ethanol (8.1 g), pivaloyl chloride (10.8 g, 89.4 mmol), and pyridine (8.5 g, 107 mmol). The mixture was stirred at room temperature for 1 hour and further at 85° C. for 2 hours. After pyridine hydrochloride was removed by filtration, the filtrate was concentrated. The product was purified by silica gel chromatography to give 2,2-dimethylpropionic acid 2-[(3-methoxyphenyl)methylamino]ethyl ester as a colorless oily matter (yield: 10.4 g (78.4%)). After pyridine hydrochloride was removed by filtration the filtrate was concentrated The product was purified by silica gel chromatography

反応条件: temp:80.01; pressure:0.00; stir:; See reaction.notes.procedure_details.

実験手順: Next, NaBH4 (3.8 g, 100 mmol) and LiBr (8.7 g, 100 mmol) were added to THF (100 ml), and the mixture was stirred at 80° C. for 1 hour. To this mixture, [(3-methoxyphenyl)methylamino]acetic acid ethyl ester (7.4 g, 33.1 mmol) dissolved in THF (20 ml) was added dropwise at room temperature. The mixture was stirred at 80° C. for 5 hours and further at room temperature for 16 hours. After the reaction solvent was evaporated to about half, KH2PO4 (1 M, 200 ml) was slowly added dropwise thereto. The organic layer was extracted with dichloromethane (50 ml) times and dried over Na2SO4 to give crude 2-[(3-methoxyphenyl)methylamino]ethanol (yield: 8.1 g). was added dropwise at room temperature The mixture was stirred at 80° C. for 5 hours and further at room temperature for 16 hours After the reaction solvent was evaporated to about half, KH2PO4 (1 M, 200 ml) was slowly added dropwise The organic layer was extracted with dichloromethane (50 ml) times dried over Na2SO4