Dichloromethane → HCID 178491073, compound

Participants

Reaction Steps

6-(6-Methoxypyridin-3-ylamino)-5-(2-methyl-9-(tetrahydro-2H-pyran-2-yl)-9H-purin-6-yl)nicotinaldehyde (191.7 mg, 0.4303 mmol) was suspended in ethanol (4.0 mL) and tetraisopropoxytitanium (0.26 mL, 0.878 mmol) and 3-methoxyaniline (0.080 mL, 0.716 mmol) were added. The reaction was stirred under nitrogen at room temperature overnight, and then more DCM (about 3 mL) was added, along with more Ti(OiPr4) (0.13 mL, 0.44 mmol) and 3-methoxyaniline (0.050 mL, 0.45 mmol). Stirring was continued overnight, and then sodium borohydride (32.3 mg, 0.854 mmol) was added, along with MeOH (1 mL). The reaction was stirred at room temperature for 35 minutes and then quenched with 5N HCl (0.60 mL), which was added dropwise. Stirring was continued at room temperature over the weekend. Then, the suspension was diluted with DCM and MeOH and filtered through a pad of Celite® (diatomaceous earth). The Celite® (diatomaceous earth) pad was washed with DCM and MeOH, and the filtrate was concentrated, treated with water, and filtered again through a fritted filter (no Celite® (diatomaceous earth)). The solid was washed with water, collected, and dried under high vacuum in a water bath at 50° C., and then at room temperature overnight, to give 5-((3-methoxyphenylamino)methyl)-N-(6-methoxypyridin-3-yl)-3-(2-methyl-9H-purin-6-yl)pyridin-2-amine (162.8 mg, 81% yield). MS (ESI pos. ion) m/z 469 (M+H)+. 1H NMR (d6-DMSO, 400 MHz) δ 12.53 (s, 1H), 9.74 (s, 1H), 8.62 (s, 1H), 8.51 (d, J=2.54 Hz, 1H), 8.27 (d, J=2.15 Hz, 1H), 8.13 (dd, J=8.80 Hz, 2.74 Hz, 1H), 7.00 (t, J=8.12 Hz, 1H), 6.87 (d, J=8.80 Hz, 1H), 6.38-6.17 (m, 3H), 4.29 (s, 2H), 3.85 (s, 3H), 3.66 (s, 3H), 2.84 (s, 3H).

Provenance & Evidence