反应详情

A solution of 4-(5-(3,6-dihydro-2H-pyran-4-yl)-2-fluoropyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (300 mg, 0.569 mmol) in 5 mL of EtOH and 5 mL of EtOAc was placed with palladium hydroxide (20% wt.) (80 mg, 0.114 mmol) and hydrogenated with a balloon full of hydrogen. After 18 h, the mixture was filtered through a pad of Celite® (diatomaceous earth) and rinsed with 2×10 mL of EtOAc. The filtrate was concentrated and the residue was purified on a silica gel column and eluted with 20-65% EtOAc in hexanes to provide 4-(2-fluoro-5-(tetrahydro-2H-pyran-4-yl)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (230 mg, 76% yield) as an off white amorphous solid. 1H NMR (400 MHz, DMSO-d6) δ ppm 8.36 (dd, J=9.4, 1.6 Hz, 1H), 8.30 (d, J=1.9 Hz, 1H), 7.24 (m, 4H), 6.90 (m, 4H), 4.79 (s, 2H), 4.75 (s, 2H), 3.94 (m, 2H), 3.74 (s, 3H), 3.72 (s, 3H), 3.45 (m, 2H), 2.95 (m, 1H), 2.47 (s, 3H), 1.70 (m, 4H). m/z (ESI, positive ion) 530.3 (M+H)+.

1. filtrationthe mixture was filtered through a pad of Celite® (diatomaceous earth)
2. washrinsed with 2×10 mL of EtOAc
3. concentrationThe filtrate was concentrated
4. customthe residue was purified on a silica gel column
5. washeluted with 20-65% EtOAc in hexanes