反应详情

To a suspension of 3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)benzoic acid (Synthech BC3558-001, 800 mg; 3.05 mmol; 1 eq.) in MeOH (16 mL) was added dropwise thionyl chloride (0.89 mL; 12.2 mmol; 4 eq.) and the reaction mixture was stirred at room temperature for 4 hours. The solvent evaporated in vacuo and the crude residue was diluted with Ethyl acetate (20 mL). The organic layer was washed with a sat. aq. NaHCO3 (5 mL), water (5 mL) and brine (5 mL), dried over magnesium sulfate and concentrated in vacuo to afford the title compound (751 mg, 89%) as a white solid.

1. customThe solvent evaporated in vacuo
2. additionthe crude residue was diluted with Ethyl acetate (20 mL)
3. washThe organic layer was washed with a sat. aq. NaHCO3 (5 mL), water (5 mL) and brine (5 mL)
4. dry with materialdried over magnesium sulfate
5. concentrationconcentrated in vacuo