Maleic Acid → HCID 178428810、化合物

関与物質

反応手順

A mixture of trans-5-iodo-7-[4-(4-methylpiperazino)cyclohexyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine (0.347 g, 0.000788 mol), 3-methyl-4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl phenyl ether (0.27 g, 0.000867 mol), tetrakis(triphenyl-phosphine)palladium(0) (0.054 g, 0.000047 mmol), and sodium carbonate (0.209 g, 0.00197 mol) in N,N-dimethylformamide (15 mL) and water (10 mL) was heated at 80° C. under an atmosphere of nitrogen for 16 hours. The mixture was allowed to cool to ambient temperature and the solvent removed under reduced pressure. The residue was partitioned between saturated aqueous sodium bicarbonate solution and ethyl acetate. The water phase was further extracted with ethyl acetate and the combined organic extracts were dried over sodium sulfate. The solvent was removed under reduced pressure and the residue was purified by flash chromatography on silica gel using triethylamine/dichloromethane (5:95) followed by methanol/triethylamine/ dichloromethane (3:5:92) as mobile phase to yield trans-5-(2-methyl-4-phenoxyphenyl)-7-[4-(4-methylpiperazino)cyclohexyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine (0.376 g, 0.000757 mol). Trans-5-(2-methyl-4-phenoxyphenyl)-7-[4-(4-methylpiperazino)-cyclohexyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine (0.376 g, 0.000757 mol) was dissolved in refluxing ethanol (10 mL) and a preheated solution of maleic acid (0.264 g, 0.00227 mol) in ethanol (5 mL) was added. The mixture was refluxed for 15 minutes, cooled to ambient temperature and the precipitate collected by filtration, washed with cool ethanol and dried to give trans-5-(2-methyl-4-phenoxyphenyl)-7-[4-(4-methylpiperazino)-cyclohexyl]-7H-pyrrolo[2,3-d]pyrimidin-4-amine trimaleate (0.153 g, 0.000181 mol): 1H NMR (DMSO-d6, 400 MHz) 8.22 (s, 1H), 7.42 (m, 3H), 7.25 (d, 1H), 7.17 (t, 1H), 7.09 (d, 2H), 7.02 (s, 1H), 6.89 (d, 1H), 6.16 (s, 6H), 4.58 (m, 1H), 3.3 (br, 9H), 2.68 (s, 3H), 2.22 (s, 3H), 2.01 (br, 6H), 1.57 (br, 2H) RP-HPLC (Hypersil C18, 5 μm, 250×4.6 mm; 25%-100% over 23 min with 0.1 M ammonium acetate, 1 mL/min) Rt 7.30 min. MS: MH+497.

情報源と証拠