反应详情

温度

100 °C

An oven dried vial containing a stirbar was charged with Pd2 dba3 (2 mg, 0.002 mmol, 0.02 equiv.), 2-di-t-butylphosphino-2′,4′,6′-tri-isopropyl-1,1′-diphenyl (Strem, 3.5 mg, 0.008 mmol, 0.08 equiv.), KOH (17 mg, 0.3 mmol, 3 equiv.) and 6-chloro-2-(6-fluoro-1H-benzo[d]imidazol-1-yl)-9-(trans-4-hydroxycyclohexyl)-7H-purin-8(9H)-one (40 mg, 0.1 mmol, 1 equiv.), followed by 1,4-dioxane (0.3 mL) and degassed water (0.3 mL). A stream of argon was passed through the reaction mixture for 3 min; the vial was then closed and heated at 100° C. After 16 h, the reaction was found to be complete. Preparative HPLC chromatography provided, after evaporation of solvent, the desired product as a white solid. 1H NMR (300 MHz, CD3OD+CDCl3) δ, ppm: 9.04 (s, 1H), 8.45 (dd, 1H), 7.80-7.65 (m, 1H), 7.15-7.08 (m, 1H), 4.42-4.30 (m, 1H), 3.84-3.77 (m, 1H), 2.70-2.60 (m, 2H), 2.25-2.11 (m, 2H), 1.97-1.83 (m, 2H), 1.62-1.40 (m, 2H); MS (EI) m/z 385.3 (MH)+.

1. customAn oven dried vial
2. additioncontaining a stirbar
3. customdegassed water (0.3 mL)
4. customthe vial was then closed
5. waitAfter 16 h
6. customPreparative HPLC chromatography provided
7. customafter evaporation of solvent