反应详情

2-(1,1-dimethylethyl)phenol (10 g, 66.67 mmol) was dissolved in 40 mL of MeOH and NaOH (40 g, 1 mol) dissolved in 40 mL of water was added dropwise. Then 40 mL of CHCl3 was added (during the course of 1 h) at 60° C. The reaction mixture was stirred at that temperature for 3 h. After cooling down to r.t., the mixture was cooled to 0° C. and 4M HCl was added until the solution reached pH 5-6. The mixture was extracted with DCM (three times) and the collected organic were dried over Na2SO4, filtered and evaporated. The crude was charged on a silica gel column and eluted with Cyclohexane/EtOAc (from 100:0 to 80:20 Cyclohexane/EtOAc, then plateau at 80:20) affording 766 mg of the of the title compound.

1. additionwas added dropwise
2. temperaturethe mixture was cooled to 0° C.
3. extractionThe mixture was extracted with DCM (three times)
4. dry with materialthe collected organic were dried over Na2SO4
5. filtrationfiltered
6. customevaporated
7. additionThe crude was charged on a silica gel column
8. washeluted with Cyclohexane/EtOAc (from 100:0 to 80:20 Cyclohexane/EtOAc