反应详情

To a solution of 2-(5-amino-pyridin-3-yl)-6-chloro-1-methyl-1H-indole-3-carbonitrile (Example 211, 85 mg, 0.3 mmol) in DMF (5 mL) is added 60% NaH in mineral oil (48 mg, 1.2 mmol), followed with propane-2-sulfonyl chloride (86 mg, 60.6 mmol). The mixture is stirred at room temperature for 5 h. The mixture is filtered and the filtrate is purified on Xbridge C18 eluting with a 1:9 to 9:1 acetonitrile-water gradient to give N′-[5-(6-chloro-3-cyano-1-methyl-1H-indol-2-yl)-pyridin-3-yl]-N,N-dimethyl-formamidine. 1H NMR (400 MHz, DMSO-d6) δ ppm 2.98 (s, 3H), 3.06 (s, 3H), 3.79 (s, 3H), 7.35 (dd, J=8.3, 1.8 Hz, 1H), 7.62 (t, J=2.1 Hz, 1H), 7.70 (d, J=8.3 Hz, 1H), 7.95 (d, J=1.8 Hz, 1H), 7.96 (s, 1H), 8.37-8.39 (m, 2H). HRMS (ESI) m/z 338.1182 [(M+H)+ Calcd for C18H17ClN5: 338.1173].

1. filtrationThe mixture is filtered
2. customthe filtrate is purified on Xbridge
3. washC18 eluting with a 1:9 to 9:1 acetonitrile-water gradient