反应详情

1-(2,2,2-Trifluoro-acetylamino)-cyclopropanecarboxylic acid[(rac)-5-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-indan-1-yl]-amide (intermediate A-1) (0.22 g, 502 μmol), 1-bromo-3,5-dichloro-2-(2,2-difluoro-ethoxy)-benzene (intermediate B-1) (169 mg, 552 μmol) and tri-o-tolylphosphine (30.6 mg, 100 μmol, eq: 0.2) were dissolved in THF (10.0 ml); then palladium(II)acetate (5.64 mg, 25.1 μmol, eq: 0.05) was added, followed by potassium carbonate (173 mg, 1.25 mmol), dissolved in water (1.0 ml). The reaction mixture was stirred at RT over night, then poured into H2O (50 ml) and extracted with EtOAc (2×25 mL). The organic layers were dried over MgSO4, filtered and concentrated in vacuo to give a crude product (0.377 g) which was purified by flash chromatography (silica gel, 20 g, 10% to 50% EtOAc in heptane) to yield the title compound (0.15 g, 56%) as light yellow amorphous solid. MS: 535.1 (M−H−, 2Cl).

1. extractionextracted with EtOAc (2×25 mL)
2. dry with materialThe organic layers were dried over MgSO4
3. filtrationfiltered
4. concentrationconcentrated in vacuo
5. customto give a crude product (0.377 g) which
6. customwas purified by flash chromatography (silica gel, 20 g, 10% to 50% EtOAc in heptane)