Triethylamine → 4,4-dimethyl-2-(4-{3-[(2R)-2-methylpyrrolidin-1-yl]propoxy}phenyl)-4,5-dihydro-1,3-oxazole
반응식
Cl[CH2:2][CH2:3][CH2:4][O:5][C:6]1[CH:11]=[CH:10][C:9]([C:12]2[O:13][CH2:14][C:15]([CH3:18])([CH3:17])[N:16]=2)=[CH:8][CH:7]=1.Cl.[CH3:20][C@@H:21]1[CH2:25][CH2:24][CH2:23][NH:22]1.C(N(CC)CC)C>>[CH3:17][C:15]1([CH3:18])[CH2:14][O:13][C:12]([C:9]2[CH:10]=[CH:11][C:6]([O:5][CH2:4][CH2:3][CH2:2][N:22]3[CH2:23][CH2:24][CH2:25][C@H:21]3[CH3:20])=[CH:7][CH:8]=2)=[N:16]1참가 물질
4
반응 조건
- 온도
- 120 °C
실험 절차
A mixture of 2-[4-(3-chloropropoxy)phenyl]-4,4-dimethyl-4,5-dihydro-1,3-oxazole ax10 (0.25 g, 0.9 mmol, 1 eq), 0.15 g of (2R)-2-methylpyrrolidine hydrochloride (1.2 mmol, 1.4 eq) and triethylamine (0.3 ml, 2.2 mmol, 2.4 eq) is stirred under microwave irradiation (120° C., 3.75 h). The mixture is then filtered. Triethylamine (0.2 ml, 1.44 mmol, 1.6 eq) is added to the organic layer, and the mixture is again stirred under microwave irradiation, at 120° C. for another 1.5 h. The solvent is then removed under vacuum and the residue diluted with ethyl acetate. The organic layer is washed with water, with a saturated solution of sodium chloride, dried over magnesium sulfate and concentrated under vacuum. The residue is purified over silicagel (eluent: dichloromethane/ethanol/ammonia, gradient from 98:2:0.2 to 96:4:0.4) to give 4,4-dimethyl-2-(4-{3-[(2R)-2-methylpyrrolidin-1-yl]propoxy}phenyl)-4,5-dihydro-1,3-oxazole 15 (60 mg) as a beige powder.