反应详情

To a solution of Intermediate 5 (4.32 g, 15.4 mmol) in MeCN (15 mL) was added 1-ethyl-3-dimethyl aminopropylcarbodiimide (4.14 g, 21.6 mmol) followed by Intermediate 72 (2.81 g, 17.0 mmol). The mixture was stirred at RT for 18 hours and then pyridine (5 mL) added. The mixture was heated under microwave irradiation at 150° C. for 30 minutes. The solvent was removed in vacuo and the residue partitioned between DCM and H2O. The layers were separated, the organic layer washed with H2O and the mixture passed through a hydrophobic frit. The solvent was removed in vacuo and the residue was recrystallised from EtOAc and petrol to give the title compound as a white solid. 1H NMR (CDCl3, 400 MHz) δ 8.63 (1H, s), 8.40 (1H, d, J=8.0 Hz), 8.20 (2H, d, J=8.0 Hz), 7.54 (2H, d, J=7.9 Hz), 7.47 (1H, d, J=7.9 Hz), 7.38-7.21 (3H, m), 7.16 (1H, d, J=7.5 Hz), 4.81 (2H, d, J=5.7 Hz), 2.14-1.94 (3H, m). LC/MS (Method A): 411 (M+H)+. HPLC (Method G) Rt 4.50 min (Purity: 97.9%).

1. temperatureThe mixture was heated under microwave irradiation at 150° C. for 30 minutes
2. customThe solvent was removed in vacuo
3. customthe residue partitioned between DCM and H2O
4. customThe layers were separated
5. washthe organic layer washed with H2O
6. customThe solvent was removed in vacuo
7. customthe residue was recrystallised from EtOAc and petrol