反应详情

A mixture of potassium carbonate (160 mg, 1.1 mmol), epibromohydrin (0.14 ml, 1.7 mmol) and 4-anilino-5-bromo-2-(4-hydroxyanilino)pyrimidine (Method 4, 200 mg, 0.56 mmol) in DMSO (2 ml) was stirred for 12 hours. 1-Methylpiperazine (0.62 ml) was added dropwise and the resulting solution was stirred for a further 12 hours. Silica (1 g) was added and volatile material was removed by evaporation. The residue was loaded onto a Varian Mega Bond Elut column and the column was eluted with 50:50 iso-hexane: DCM (2×20 ml), DCM (2×20 ml), 2% 2M NH3/MeOH/DCM (2×20 ml), 4% 2M NH3/MeOH/DCM (2×20 ml), 6% 2M NH3/MeOH/DCM (2×20 ml) and 10% 2M NH3/MeOH/DCM (8×20 ml). Concentration of the appropriate fractions gave the product as a yellow gum (87 mg, 30%). MS (MH+): 513, 515; HPLC (RT): 1.85.

1. stirringthe resulting solution was stirred for a further 12 hours
2. additionSilica (1 g) was added
3. customvolatile material was removed by evaporation
4. washthe column was eluted with 50:50 iso-hexane