Tetrahydrofuran → 4-(5-chloro-2-(5-fluoro-6-methoxypyridin-3-ylamino)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine

Participants

Reaction Steps

A stirred mixture of 5-fluoro-6-methoxypyridin-3-amine (Anichem, North Brunswick, N.J.; 0.834 g, 5.87 mmol) and 4-(5-chloro-2-fluoropyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (1.8776 g, 3.91 mmol) in THF (50.0 mL, 610 mmol) was treated dropwise with LiHMDS (1.0 M in THF, 16.74 mL, 16.74 mmol) at −15° C. (ice-salt bath) and stirred for 40 min. The reaction was then quenched with water and saturated NH4Cl(aq) (25 mL each) and diluted with EtOAc (25 mL). Organic layer was separated, and the aqueous layer was extracted with ethyl acetate (2×50 mL). The combined organic layers were then washed with brine, dried over Na2SO4, and concentrated. Chromatographic purification of the residue (silica gel, 0% to 1% MeOH/DCM) followed by washing of the purified product with isopropanol gave 4-(5-chloro-2-(5-fluoro-6-methoxypyridin-3-ylamino)pyridin-3-yl)-N,N-bis(4-methoxybenzyl)-6-methyl-1,3,5-triazin-2-amine (2.07 g, 3.44 mmol, 88% yield). 1H NMR (400 MHz, CDCl3) δ 8.77 (d, J=2.54 Hz, 1H); 8.23 (d, J=2.54Hz, 1H); 7.95 (d, J=1.96 Hz, 1H); 7.90 (d, J=12.13 Hz, 1H); 7.18 (dd, J=17.41, 8.41 Hz, 4H); 6.86 (t, J=8.12 Hz, 4H); 4.86 (s, 2H); 4.82 (s, 2H); 4.01 (s, 3H); 3.81 (s, 3H); 3.79 (s, 3H); 2.60 (s, 3H).

Provenance & Evidence