反应详情

温度

100 °C

4-Anilino-2,5-dichloropyrimidine (Method 7, 241 ma, 1.0 mmol) was dissolved in n-butanol (20 ml) and methanol (4 ml). 4-[2-Hydroxy-3-(isopropylamino)propoxy]aniline (obtained as described in Pharmazie 1980, 35, 278; 202 mg, 0.9 mmol) and ethereal hydrogen chloride (1.0M; 2 ml, 2.0 mmol) were added and the solution was heated at 100° C. for 20 hours, allowed to cool to ambient temperature and then concentrated to a volume of 5 ml. The solution was loaded on a Varian Mega Bond Elut column and the column was eluted with 0-4% 2.0M methanolic ammonia solution in DCM. Concentration of the appropriate fractions and recrystallization of the residue from acetonitrile gave the product as a white solid (159 mg, 41%). NMR: 1.0 (d, 6H), 2.5-2.6 (m, 1H), 2.65-2.75 (m, 2H), 3.8-3.95 (m, 3H), 4.9 (br s, 1H), 6.8 (d, 2H), 7.1 (t, 1H), 7.35 (t, 2H), 7.45 (d, 2H), 7.65 (d, 2H), 8.1 (s, 1H), 8.7 (s, 1H), 9.1 (s, 1H); MS (MH+): 428, 430.

1. temperatureto cool to ambient temperature
2. concentrationconcentrated to a volume of 5 ml
3. washthe column was eluted with 0-4% 2.0M methanolic ammonia solution in DCM
4. customConcentration of the appropriate fractions and recrystallization of the residue from acetonitrile