反应详情

2-Methyl-3-bromo-phenylmethanol (201 mg, 1 mmol, prepared by a method disclosed in PCT patent application WO2010143733), (4-(benzyloxy)-2,6-dimethylphenyl) boronic acid 12b (300 mg, 1.20 mmol), 1 mL of 2M aqueous sodium carbonate solution, 2-dicyclohexylphosphino-2′,6′-dimethoxy-1,1′-biphenyl (33 mg, 0.08 mmol) and tris(dibenzylideneacetone)dipalladium (18 mg, 0.02 mmol) were dissolved in 1 mL of N,N-dimethylformamide. The reaction mixture was reacted at 120° C. under microwave conditions for 1 hour. The resulting mixture was mixed with 10 mL of water and extracted with ethyl acetate (20 mL×2). The combined organic extracts were washed with saturated sodium chloride solution (30 mL), dried with anhydrous magnesium sulphate, and filtered. The filtrate was concentrated under reduced pressure. The residue was purified by silica gel column chromatography with elution system B to obtain the title compound (4′-(benzyloxy)-2,2′,6′-trimethylbiphenyl-3-yl)methanol 12c (190 mg, yield 57.2%) as a red slime.

1. customThe reaction mixture was reacted at 120° C. under microwave conditions for 1 hour
2. extractionextracted with ethyl acetate (20 mL×2)
3. washThe combined organic extracts were washed with saturated sodium chloride solution (30 mL)
4. dry with materialdried with anhydrous magnesium sulphate
5. filtrationfiltered
6. concentrationThe filtrate was concentrated under reduced pressure
7. customThe residue was purified by silica gel column chromatography with elution system B