反应详情

Sodium hydride (0.521 mmol) was added to a solution of N-(8-(6-amino-5-(trifluoromethyl)pyridin-3-yl)-1-(6-(2-cyanopropan-2-yl)pyridin-3-yl)-3-methyl-1H-imidazo[4,5-c]quinolin-2(3H)-ylidene)cyanamide (Example 5, 0.474 mmol) in dry THF. The reaction mixture was stirred for 20 minutes, followed by the addition of dibenzylchloro phosphate (0.474 mmol). The reaction mixture was further stirred at RT for 24 h. The crude product was filtered and purified (silica gel column, MeOH/CHCl3 as eluent) to obtain the title compound. 1H NMR (300 MHz, DMSO-d6): δ 9.22 (s, 1H), 9.06 (d, J=2.4 Hz, 1H), 8.41 (dd, J=8.4, 2.4 Hz, 1H), 8.16 (d, J=9.0 Hz, 1H), 8.08 (bs, 1H), 8.01-7.97 (m, 2H), 7.81 (bs, 1H), 7.46 (m, 1H), 7.34-7.21 (m, 5H), 6.86 (d, J=1.8 Hz, 1H), 4.67 (d, 2H), 3.91 (s, 3H), 1.74 (s, 3H), 1.73 (s, 3H); MS (m/z): 618.3 (M+1)+.

1. stirringThe reaction mixture was further stirred at RT for 24 h
2. filtrationThe crude product was filtered
3. custompurified (silica gel column, MeOH/CHCl3 as eluent)