反应详情

温度

0 °C

To a cold (0° C.) solution of 2-(2-benzyloxy-6-methoxy-phenyl)-5,5-dimethyl-oxazolidin-4-one (410 mg) in dry DMF (5 mL) is added portionwise NaH 90% (45 mg, 1.5 eq). The reaction mixture is stirred for 15 min at 0° C. and then commercially available 1-(bromomethyl)-4-phenoxybenzene (395 mg, 1.2 eq) is added and the reaction mixture is stirred at RT for 1 h. The reaction mixture is poured into water, extracted with DCM. The combined organic extracts are dried (MgSO4), filtered and concentrated to yield a crude oil. FC (EN n-heptane: 0/1 to 4/6) gives 2-(2-benzyloxy-6-methoxy-phenyl)-5,5-dimethyl-3-(4-phenoxy-benzyl)-oxazolidin-4-one as a colorless oil (0.495 g, 77%); LC-MS: tR=0.88 min; [M+H]+=510.33.

1. stirringthe reaction mixture is stirred at RT for 1 h
2. extractionextracted with DCM
3. dry with materialThe combined organic extracts are dried (MgSO4)
4. filtrationfiltered
5. concentrationconcentrated
6. customto yield a crude oil