反应详情

To a suspension of N-[2-({4-[4-[2-(difluoromethyl)-4-methoxy-1H-benzimidazol-1-yl]-6-(4-morpholinyl)-1,3,5-triazin-2-yl]-1-piperazinyl}sulfonyl)ethyl]-N,N-dimethylamine from the previous step in MeOH (100 mL) was added a slight excess of 1.25 M HCl in MeOH (0.45 mL). The resulting clear solution was concentrated to dryness. The residue was recrystallized from MeOH/EtOAc to give 0.51 g (83% yield for the last two steps) of N-[2-({4-[4-[2-(difluoromethyl)-4-methoxy-1H-benzimidazol-1-yl]-6-(4-morpholinyl)-1,3,5-triazin-2-yl]-1-piperazinyl}sulfonyl)ethyl]-N,N-dimethylamine hydrochloride: mp (MeOH/EtOAc) 222-224° C.; Anal. Calcd. for C24H34ClF2N9O4S: C, 46.6; H, 5.5; N, 20.4; Cl, 5.7. Found: C, 46.3; H, 5.7; N, 20.0; Cl, 5.7%.

1. concentrationThe resulting clear solution was concentrated to dryness
2. customThe residue was recrystallized from MeOH/EtOAc