Boron tribromide → HCID 52951573、化合物
反応式
C[O:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[CH2:8][CH:7]([C:12]([O:14][CH3:15])=[O:13])[CH2:6]2.B(Br)(Br)Br>ClCCl>[OH:2][C:3]1[CH:4]=[C:5]2[C:9](=[CH:10][CH:11]=1)[CH2:8][CH:7]([C:12]([O:14][CH3:15])=[O:13])[CH2:6]2参加物
4
反応条件
- 温度
- 0 °C
実験手順
To a solution of methyl 5-methoxy-2,3-dihydro-1h-indene-2-carboxylate (696) (2.35 g, 11.4 mmol) in anhydrous dichloromethane (40 mL) cooled to −78° C. was added boron tribromide (1.5 eq.). The reaction was allowed to stir at −78° C. for 30 minutes, 0° C. for 2 hours, and at room temperature overnight. The reaction mixture was cooled to 0° C. and quenched slowly with methanol. After stifling for 15 minutes a saturated sodium bicarbonate solution was added slowly to the mixture and allowed to stir at 0° C. for 30 minutes. Ethyl acetate was added and the layers were separated. The aqueous layer was extracted with ethyl acetate and the combined organic layers were dried over sodium sulfate, filtered and concentrated in vacuo to afford methyl 5-hydroxy-2,3-dihydro-1H-indene-2-carboxylate (697).