反应详情

温度

50 °C

To a solution of 2-chloro-5-isopropyl-phenol and 4-chloro-3-isopropyl-phenol from step 1 (8.694 g, 47.1 mmol) in 50 mL DMF was added K2CO3. Iodomethane (3.5 mL, 56.5 mmol) was added and the mixture was warmed to 50° C. After 4 hours H2O was added. The mixture was extracted with ethyl acetate, washed with H2O, washed and washed with brine. The combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo to give 1-chloro-4-isopropyl-2-methoxy-benzene and 1-chloro-2-isopropyl-4-methoxy-benzene (9.289 g) as a 7:3 inseparable mixture in the form of a pale yellow oil, which was used directly in the following step.

1. extractionThe mixture was extracted with ethyl acetate
2. washwashed with H2O
3. washwashed
4. washwashed with brine
5. dry with materialThe combined organic layers were dried over Na2SO4
6. filtrationfiltered
7. concentrationconcentrated in vacuo