Sodium Carbonate → 3'-Chloro-3-fluoro-4'-[3,3,3-trifluoro-2-hydroxy-1-methyl-2-(3-methyl-2-oxo-2,3-dihydro-benzooxazol-5-yl)-propyl]-biphenyl-4-carboxylic acid methyl ester

Participants

Reaction Conditions

Reaction Steps

5-[2-(4-Bromo-2-chloro-phenyl)-1-hydroxy-1-trifluoromethyl-propyl]-3-methyl-3H-benzooxazol-2-one (500 mg, obtained in Example 116, step 8), 3-fluoro-4-methoxycarbonyl-phenylboronic acid (320 mg, [CAS Reg. No. 505083-04-5]) and dichloro(1,1′-bis(diphenyl-phosphino)ferrocene)palladium(II)dichloromethane adduct (39 mg) were dissolved in dioxane (9 mL) and water (5 mL). To the reaction mixture was added 2.0 M aqueous Na2CO3 (0.81 mL). The mixture was heated to 80° C. for 2 hours. The reaction mixture was cooled, poured into ice/water and extracted two times with ethyl acetate. The combined organic layers were washed with brine, dried over Na2SO4, filtered and the solvent was evaporated. The residue was purified by flash chromatography (silica gel, gradient of heptane in ethyl acetate) to give the title compound as a colorless foam (440 mg, 76%). MS (m/e)=555.2 [(M+NH4+)+], MS (m/e)=506.1 [(M−CH3O−)+].

Provenance & Evidence