反应详情

温度

68 °C

6-Chloro-2-methylamino-3-nitro-benzonitrile (500 mg, 2.4 mmol), 2-hydroxymethyl-phenylboronic acid (466 mg, 3.1 mmol), and potassium carbonate (1.30 g, 6.1 mmol) were combined in DMA (10 mL) in a flask purged with nitrogen. Tris(dibenzylideneacetone)dipalladium(0) (108 mg, 0.12 mmol) and 2-dicyclohexylphosphino-2′-(N,N-dimethyl-amino)biphenyl (93 mg, 0.24 mmol) were added, and the reaction stirred at 68° C. under nitrogen for 16 h. The solution was diluted with EtOAc (50 mL), and washed with 1N HCl and brine. Organics were dried (MgSO4) and concentrated in vacuo. Purification by silica gel chromatography (2:1:1 hexanes/CHCl3/EtOAc) gave 550 mg (82%) of the title compound as an orange solid. 1H NMR (400 MHz, CDCl3): δ 8.49 (br s, 1H), 8.35 (d, 1H, J=8.8 Hz), 7.59 (d, 1H, J=7.6 Hz), 7.46 (td, 1H, J=7.6, 1.2 Hz), 7.40 (td, 1H, J=7.6, 1.2 Hz), 7.20 (dd, 1H, J=7.6, 1.2 Hz), 6.60 (d, 1H, J=8.8 Hz), 4.52 (qAB, 2H, J=31.6, 12.8 Hz), 3.46 (s, 3H). MS (ES) [m+H] calc'd for C15H13N3O3, 284; found 284.

1. custompurged with nitrogen
2. washwashed with 1N HCl and brine
3. dry with materialOrganics were dried (MgSO4)
4. concentrationconcentrated in vacuo
5. customPurification by silica gel chromatography (2:1:1 hexanes/CHCl3/EtOAc)