Sodium Carbonate → HCID 68195034, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of (R)-2-(2-chloro-6a,7,9,10-tetrahydro-[1,4]oxazino[3,4-h]pteridin-5(6H)-yl)-N-methyl-N-((tetrahydro-2H-pyran-4-yl)methyl)acetamide (PREPARATION x79, 70 mg, 0.177 mmol), indole-4-boronic acid (42.7 mg, 0.265 mmol), tetrakis(triphenylphosphine)palladium(0) (20.43 mg, 0.018 mmol), and sodium carbonate (37.5 mg, 0.354 mmol) in 1,4-dioxane (0.7 mL) and water (0.35 mL) was heated to 120° C. for 1 hour in a microwave. After cooling to room temperature, the reaction mixture was diluted with EtOAc, washed with water and brine, dried over Na2SO4, filtered, and concentrated in vacuo. The residue was purified by column chromatography (silica-NH, gradient 0-10% MeOH/CHCl3) to afford the title compound as an off-white solid (36.8 mg, 43.7%). 1H NMR (400 MHz, DMSO-d6) δ ppm 1.04-1.61 (m, 4 H), 1.78-1.97 (m, 1 H), 2.80-3.09 (m, 4 H), 3.12-3.38 (m, 7 H), 3.58 (t, J=9.98 Hz, 2 H), 3.78-4.16 (m, 5 H), 4.41-4.60 (m, 2 H), 7.11 (t, J=7.71 Hz, 1 H), 7.26-7.64 (m, 4 H), 7.86-7.95 (m, 1 H), 11.11 (br s, 1 H); ESI-MS m/z [M+H]+ calc'd for C26H32N6O3, 477.26; found 477.3.

Provenance & Evidence