反应详情

温度

85 °C

4-Chloro-6-(4nitro-phenoxy)pyrimidine (Stage 22.5; 3 g, 11.9 mmol), 4-nitrophenol (1.95 g, 17.9 mmol), and diisopropylethylamine (DIPEA) (3.04 ml, 179 mmol) dissolved in 2-propanol (50 ml) are stirred at 85° C. for 18 h. After concentrating the reaction mixture under reduced pressure, the product precipitates as a colorless fine solid: M+H=245.0; 1H-NMR (400 MHz, DMSO-d6): 9.40/9.25 (s/s, 2H, NH/OH), 8.28 (d, 7.5 Hz, 2H, phenyl-NO2), 8.26 (s, 1H, pyrimidinyl), 7.40 (d, 7.5 Hz, 2H, phenyl-NO2), 7.24 (d, 8.0 Hz, 2H, phenyl-OH), 6.77 (d, 8.0 Hz, 2H, phenyl-OH), 6.15 (s, 1H, pyrimidinyl); Rf (AcOEt/hexane=2:1): 0.48.

1. concentrationAfter concentrating the reaction mixture under reduced pressure
2. customthe product precipitates as a colorless fine solid