1,2-Dimethoxyethane → HCID 178488234, compound

Participants

Reaction Steps

cis-3-Iodo-1-[4-(4-methylpiperazino)cyclohexyl]-1H-pyrazolo[3,4-d]pyrimidin-4-amine (10 g, 22.66 mmol), tert-butyl N-[2-methoxy-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl]carbamate (9.49 g, 27.17 mmol), palladium tetrakistriphenyphosphine (1.57 g, 1.36 mmol) and sodium carbonate (5.76 g, 54.38 mmol) were mixed with ethylene glycol dimethyl ether (180 mL) and water (90 mL). The reaction mixture was heated at reflux overnight. Organic solvent was removed under reduced pressure and the aqueous layer was extracted with dichloromethane. The combined organic layer was washed with water then brine, dried over MgSO4, filtered and evaporated. The residue was purified by preparative thin layer column chromatography using dichloromethane/methanol (80:20) as mobile phase to give cis-tert-butyl N-(4-{4-amino-1-[4-(4-methylpiperazino)cyclohexyl]-1H-pyrazolo[3,4-d]pyrimidin-3-yl}-2-methoxyphenyl)carbamate (10.859 g, 89%). 1H NMR (DMSO-d6) δ 1.49 (s, 9H), 1.58 (m, 2H), 1.71 (m, 2H), 2.08 (m, 2H), 2.17 (s, 3H), 2.45 (m, 4H), 2.38 (m, 4H), 2.45 (m, 3H), 3.87 (s, 3H), 4.80 (m, 1H), 7.22 (m, 2H), 7.91 (d, J=8.14, 1H), 8.04 (s, 1H), 8.22 (s, 1H).

Provenance & Evidence