反应详情

A mixture of trifluoroacetic acid/dichloromethane (20:80, 150 mL) was added to a solution of N-(4-{4-amino-1-[4-(4-methylpiperazino)cyclohexyl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-2-methoxyphenyl)carbamate (4.75 g, 8.85 mmol) in dichloromethane (100 mL) at about 0° C. About 2 hours later, the ice-bath was removed and the solvents were evaporated and the residue was dissolved in dichloromethane. Sodium hydroxide (1.0N) was added to adjust the pH to about 10. The solid formed upon removal of organic solvent was collect by filtration to give trans-3-(4-amino-3-methoxyphenyl)-1-[4-(4-methylpiperazino)cyclohexyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (3.85 g, 100%). 1H NMR (DMSO-d6) δ 1.44(m, 2H), 1.96 (m, 6H), 2.21 (s, 3H), 2.33 (m, 5H), 2.53 (m, 4H), 3.83 (s, 3H), 4.60 (m, 1H), 5.03 (bs, 2H), 6.76 (d, J=7.91 Hz, 1H), 6.98 (d, J=7.89 Hz), 7.03 (m, 2H), 8.19 (s, 1H).

1. customthe ice-bath was removed
2. customthe solvents were evaporated
3. dissolutionthe residue was dissolved in dichloromethane
4. additionSodium hydroxide (1.0N) was added
5. customThe solid formed upon removal of organic solvent
6. filtrationwas collect by filtration