反应详情

2-(3-methoxy-4-methylphenyl)acetic acid (1 g, 5.55 mmol) was dissolved in Tetrahydrofuran (27.7 ml). A solution of borane tetrahydrofuran complex (12.21 ml, 12.21 mmol) was added slowly under nitrogen. The reaction was stirred for about 18 h. Methanol was slowly to quench the reaction. The mixture was rotovapped. More methanol was added. The mixture was rotovapped. This was repeat two more times. The solution was passed through a short pad of silica gel eluting with 1:1 EtOAc/heptane and then rotovapped to give 2-(3-methoxy-4-methylphenyl)ethanol (0.800 g, 4.81 mmol, 87% yield) as a colorless oil: 1H NMR (400 MHz, CDCl3) δ ppm 7.07 (dd, 1H), 6.73 (dd, 1H), 6.69 (s, 1H), 3.86 (t, 2H), 3.30 (s, 3H), 2.84 (t, 2H), 2.14 (s, 3H), 1.41 (s, 1H)

1. additionA solution of borane tetrahydrofuran complex (12.21 ml, 12.21 mmol) was added slowly under nitrogen
2. customto quench
3. customthe reaction