反应详情

To a solution of 3-[3-({4-[(2-bromo-5-methoxybenzyl)amino]-5-chloropyrimidin-2-yl}amino)phenyl]propan-1-ol (3.0 g, 6.3 mmol) in methylene chloride (40 mL) was added slowly a solution of boron tribromide in methylene chloride (31 mL, 31 mmol, 1.0 M) at 0° C. The mixture was allowed to warm up to rt and stirred over the weekend. The resultant mixture was cooled in dry ice when Na2CO3 (saturated aqueous solution) was added. The mixture was filtered and the solid collected was triturated with EtOAc, followed by washing with cold water to give the desired product (3.0 grams, 91%) as an off-white powder. LCMS for C20H19Br2ClN4O (M+H)+: m/z=524.8, 526.8, 528.7.

1. additionwas added
2. filtrationThe mixture was filtered
3. customthe solid collected
4. customwas triturated with EtOAc
5. washby washing with cold water