Potassium Carbonate → 5-(2-tert-Butoxycarbonyl-vinyl)-2-[(4-methoxy-benzenesulfonyl)-methyl-amino]-3-methyl-benzoic acid methyl ester

참여 물질

반응 단계

A mixture of 1.28 g (3.0 mmol) of the product of Example 202, 1.31 ml (9.0 mmol) of t-butylacrylate, 33.75 mg (0.15 mmol) of palladium diacetate, 1.0 g (3.15 mmol) of t-butyl ammonium bromide and 1.24 g (9.0 mmol) of K2CO3 in 10 ml of DMF was stifled at 85° C. for 6 h. The reaction mixture was poured into water and extracted with ethyl acetate. The combined organics were washed with water and brine, dried over MgSO4, filtered and concentrated in vacuo. The resulting residue was dissolved in 20 ml of dichloromethane and stired with 1.0 g of celite and 1.0 g of silica gel for 20 min, filtered and concentnted in vacuo. The resulting residue was chromatographed on silica gel eluting with ETOAc/Hexane (1:5) to provide 1.26 g (88%) of the desired product as a white solid. Electrospray Mass Spec 476(M+H).

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