反应详情

6-Bromo-8-cyclopentyl-5-methyl-2-(5-morpholin-4-yl-pyridin-2-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one (0.310 g, 0.641 mmol), tetrakis(triphenylphosphine)palladium (0.089 g, 0.077 mmol) and tributyl-(1-ethoxy-vinyl)-stannane (0.361 g, 1.0 mmol) were dissolved in toluene (3 mL) and slowly brought to reflux for 2 hours. The reaction mixture was allowed to cool, then purified by silica gel chromatography to give 8-cyclopentyl-6-(1-ethoxy-vinyl)-5-methyl-2-(3,4,5,6-tetrahydro-2H-[1,3′]bipyridinyl-6′-ylamino)-8H-pyrido[2,3-d]pyrimidin-7-one as a yellow solid (0.180 mg, 59.2%). 1H NMR δvvv (400 MHz, CDCl3) 8.73 (s, 1H), 8.16 (d, J=9.0 Hz, 1H), 8.05 (s, 1H), 8.01 (d, J=2.9 Hz, 1H), 7.36 (dd, J=2.9, 9.3 Hz, 1H), 5.90 (m, 1H), 4.52 (d, J=2.4 Hz, 1H), 4.18 (d, J=2.2 Hz, 1H), 3.93 (q, J=7.1 Hz, 2H), 3.14 (m, 4H), 2.41 (s, 3H), 2.36 (m, 2H), 2.06 (m, 2H), 1.84 (m, 2H), 1.56-1.77 (m, 8H), 1.21 (t, J=7.1 Hz, 3H).

1. temperatureto reflux for 2 hours
2. temperatureto cool
3. custompurified by silica gel chromatography