反应详情

To a solution of 1-[2-(hydroxymethyl)-6-(methoxymethoxy)phenyl]-2,2-dimethyl-propan-1-ol (Intermediate 3, 300 mg, 1.18 mmol) in dry THF (5 mL) at OC butyllithium 1.6M solution in hexane (0.74 ml, 1.18 mmol) was slowly added and the reaction mixture was stirred for 5 minutes at the same temperature. 4-methylbenzenesulfonyl chloride (224.89 mg, 1.18 mmol) dissolved in THF (1 ml) was slowly added and the reaction mixture was stirred for 5 minutes at the same temperature. Butyllithium 1.6M solution in hexane (0.74 ml, 1.18 mmol) was slowly added and the reaction mixture was stirred for 30 minutes at at 0° C. The reaction was quenched with water (1 ml), diluted with brine (10 ml) and extracted with ethyl acetate (2×15 ml). The organic layer was dried (Na2SO4), filtered and evaporated and The residue was purified by flash chromatography (Biotage system) on silica gel using a SNAP 25 g as column and cyclohexane/ethyl acetate from 100:0 to 70:30 as eluent affording the title compound (260 mg) as colorless oil.

1. additionwas slowly added
2. stirringthe reaction mixture was stirred for 5 minutes at the same temperature
3. stirringthe reaction mixture was stirred for 30 minutes at at 0° C
4. customThe reaction was quenched with water (1 ml)
5. additiondiluted with brine (10 ml)
6. extractionextracted with ethyl acetate (2×15 ml)
7. dry with materialThe organic layer was dried (Na2SO4)
8. filtrationfiltered
9. customevaporated
10. customThe residue was purified by flash chromatography (Biotage system) on silica gel using a SNAP 25 g as column and cyclohexane/ethyl acetate from 100:0 to 70:30 as eluent