反应详情

温度

25 °C

To a solution of 3,5-dintrobenzylic alcohol 6 (1.38 g, 6.94 mmol), triphenylphosphine (2.19 g, 8.33 mmol) and phthalimide (1.23 g, 8.33 mmol) in dry THF (40 mL) was added DIAD (1.64 mL, 8.33 mmol) under an N2 atmosphere. The resulting mixture was stirred at 25° C. for 48 hours after which solvents were evaporated under reduced pressure. The crude product mixture was triturated in EtOAc and filtered under reduced pressure to give the title compound 7 as a beige solid (1.33 g, 4.05 mmol, 58%). 1H NMR (400 MHz, CDCl3) δ 8.98 (t, J=2.0 Hz, 1H), 8.61 (d, J=2.0 Hz, 2H), 7.93-7.89 (m, 2H), 7.81-7.77 (m, 2H), 5.05 (s, 2H); 13C NMR (75 MHz, CDCl3) δ 168.5, 168.4, 149.6, 141.3, 135.5, 132.5, 129.6, 124.7, 119.3, 41.2; HRMS (ESI) Calculated for C15H10N3O6 [M+H]+: 328.0564. Found: 328.0568. m.p.: 171° C.

1. customwere evaporated under reduced pressure
2. customThe crude product mixture was triturated in EtOAc
3. filtrationfiltered under reduced pressure