methyl 3-[(2S)-1-(difluoromethoxy)propan-2-yl]oxy-5-phenylmethoxy-benzoate → methyl 3-[(2S)-1-(difluoromethoxy)propan-2-yl]oxy-5-hydroxy-benzoate
反応式
[F:1][CH:2]([F:26])[O:3][CH2:4][C@@H:5]([O:7][C:8]1[CH:9]=[C:10]([CH:15]=[C:16]([O:18]CC2C=CC=CC=2)[CH:17]=1)[C:11]([O:13][CH3:14])=[O:12])[CH3:6]>C(O)C>[F:1][CH:2]([F:26])[O:3][CH2:4][C@@H:5]([O:7][C:8]1[CH:9]=[C:10]([CH:15]=[C:16]([OH:18])[CH:17]=1)[C:11]([O:13][CH3:14])=[O:12])[CH3:6]参加物
3
実験手順
Methyl 3-({(1S)-2-[(difluoromethyl)oxy]-1-methylethyl}oxy)-5-[(phenylmethyl)oxy]benzoate (0.48 g, 1.08 mmol) was dissolved in ethanol (10 mL) and THF (10 mL) and the flask evacuated and purged with argon (3 times). 10% Palladium on carbon (140 mg) was added and the flask further evacuated and finally purged with hydrogen gas. The reaction mixture was stirred at RT for 20 hours until completion. The reaction mixture was evacuated and purged with argon (3 times) then the catalyst removed by filtration through Celite®. The filtrate was concentrated in vacuo to give the desired compound as a colourless oil (1.05 g). 1H NMR δ (CDCl3): 1.35 (d, 3H), 3.90 (s, 3H), 3.90-4.02 (m, 2H), 4.57-4.64 (m, 1H), 5.20 (s, 1H), 6.26 (t, 1H), 6.63 (t, 1H), 7.14-7.15 (m, 1H), 7.17-7.18 (m, 1H); m/z 275 (M−H)−