反应详情

In an evaporated schlenk flask kept under nitrogen atmosphere were added {4-[3,3-bis-(4-bromo-phenyl)-allylsulfanyl]-2-methyl-phenoxy}-acetic acid (208 mg, 0.38 mmol, example 1, step A–B), 4-(methansulfonyl)phenylboronic acid (280 mg, 1.4 mmol), KF (77 mg, 1.33 mmol), Pd2(dba)3 (21 mg, 23 mmol) and Pd(P(t-BU)3)2 (23 mg, 46 mmol). THF (5 ml) was added to the solid mixture keeping the mixture under nitrogen. The reaction mixture was stirred at room temperature for 1 h, followed by 4 h at 50° C. A saturated solution of ammonium chloride (5 ml) was added, and the mixture was extracted with dichloromethane (2×20 ml). The organic phases were dried and evaporated. The residue was purified by column chromatography (eluent: ethyl acetate:methanol (9:1)) to give the title compound in 95 mg (36%) yield.

1. customIn an evaporated schlenk flask kept under nitrogen atmosphere
2. waitfollowed by 4 h at 50° C
3. extractionthe mixture was extracted with dichloromethane (2×20 ml)
4. customThe organic phases were dried
5. customevaporated
6. customThe residue was purified by column chromatography (eluent: ethyl acetate:methanol (9:1))