反应详情

A solution of dimethyl 5-(4-(methylsulfonyl)phenoxy)-4-(prop-1-enyl)isophthalate (2.6 g, 7.8 mmol) in CH2Cl2 and methanol was cooled to −78° C. and treated with ozone until the solution appeared blue (20 min). Nitrogen was bubbled through the solution until the blue color dissipated. Dimethylsulfide (1.0 mL) was added and the cold-bath was removed allowing the reaction mixture to warm to room temperature overnight. Concentration of the solution under vacuum provided an oil, which was introduced into a silica gel column and eluted with 10-30% EtOAc in hexanes to afford the title compound (2.5 g, 98%) as a white solid. 1H NMR (300 MHz, CHLOROFORM-d) δ ppm 3.08 (q, 3 H) 3.95 (dd, 6 H) 7.08-7.16 (m, 2 H) 7.98 (q, J=2.07 Hz, 2 H) 7.99-8.03 (m, 1 H) 8.33-8.39 (m, 1 H) 10.46 (s, 1 H); LC-MS (ERS)+ m/z=393.00 (M+H)+.

1. custom(20 min)
2. customNitrogen was bubbled through the solution until the blue color
3. additionDimethylsulfide (1.0 mL) was added
4. customthe cold-bath was removed
5. customConcentration of the solution under vacuum provided an oil, which
6. additionwas introduced into a silica gel column
7. washeluted with 10-30% EtOAc in hexanes