反应详情

2-Bromo-3-nitro-5-trifluoromethyl-pyridine (10.00 g, 36.87 mmol) was dissolved in toluene (250 ml) with stirring to give a pale yellow solution. Tetrabutylammonium bromide (11.90 g, 36.9 mmol) was added followed by copper(I) cyanide (9.92 g, 111 mmol) and the mixture was heated at reflux for 10 h. After cooling to RT, the reaction mixture was partitioned between water (750 ml) and EtOAc (750 ml). The organic fractions were combined, washed with water (2×250 ml) and brine (100 ml), dried (MgSO4) and concentrated in vacuo to afford the title product. 1H-NMR: [400 MHz, DMSO-d6 δH 9.55 (1H, m, ArH), 9.24 (1H, m, ArH)

1. customto give a pale yellow solution
2. temperaturethe mixture was heated
3. temperatureat reflux for 10 h
4. customthe reaction mixture was partitioned between water (750 ml) and EtOAc (750 ml)
5. washwashed with water (2×250 ml) and brine (100 ml)
6. dry with materialdried (MgSO4)
7. concentrationconcentrated in vacuo