反应详情

To a stirred solution of compound 36 (0.143 g, 1 eq.), compound 209b (0.112 g, 1 eq.), and polystyrene supported triphenylphosphine (0.411 g, 2 eq.) in anhydrous THF (8 mL) was added dropwise DIAD (150 μL, 2 eq.) at 0° C. The reaction mixture was stirred at room temperature overnight. The mixture was filtered on autocup, washed with dichloromethane, and concentrated. The crude residue was purified by chromatography on a silica gel to give compound 37 in 42% yield. MS (ESI, EI+) m/z=658 (MH+).

1. filtrationThe mixture was filtered on autocup
2. washwashed with dichloromethane
3. concentrationconcentrated
4. customThe crude residue was purified by chromatography on a silica gel