反应详情

A mixture of 7-trifluoromethylsulfonyloxy-1-(4-methylpiperazin-1-yl)naphthalene (0.527 g, 1.53 mmol), bis(triphenylphosphine)palladium[II]chloride (0.537 g, 0.77 mmol), 5-cyano-3-trimethylstannylpyridine (0.0.450 g, 1.69 mmol, from preparation 7), triethylamine (1.02 mL, 7.34 mmol), lithium chloride (0.194 g, 4.59 mmol), 2,6-di-tert-butyl-4-methylphenol (approximately 0.01 g), and N,N-dimethylformamide (6 mL) was heated between 100° C. to 115° C. under nitrogen for 1.5 hours. The resulting mixture was concentrated via evaporation under reduced pressure, and the residue was column chromatographed using silica gel (approximately 25 g) and elution with 5% methanol in ethyl acetate to afford the title compound (0.170 g, 0.52 mmol, 34%) as a pale yellow foam: Rf =0.40 in 5% methanol in ethyl acetate; 1H (CD3OD) δ 9.08 (d, J=2.2 Hz, 1H), 8.82 (d, J=2.2 Hz, 1H), 8.43 (t, J=2.0 Hz, 1H), 8.36 (br s, 1H), 7.92 (d, J=8.5 Hz, 1H), 7.70 (dd, J=1.8 and 8.5 Hz, 1H), 7.57 (br d, J=8.2 Hz, 1H), 7.44 (t, J=7.8 Hz, 1H), 7.17 (d, J=7.3 Hz, 1H), 3.20-3.00 (br s, 4H), 2.85-2.65 (br s, 4H), 2.40 (s, 3H); LRMS (m/z, relative intensity) 328 (M+, 100); HRMS m/e calculated for C21H20N4 328.1690. Observed m/e 328.1715

1. temperaturewas heated between 100° C. to 115° C. under nitrogen for 1.5 hours
2. concentrationThe resulting mixture was concentrated via evaporation under reduced pressure
3. customchromatographed
4. washsilica gel (approximately 25 g) and elution with 5% methanol in ethyl acetate