反应详情

6-Bromomethyl-8-cyclopentyl-2-methylsulfanyl-8H-pyrido[2,3-d]pyrimidin-7-one (1.33 g, 3.75 mmol) was dissolved in 2-methoxyethanol (10 mL) to which potassium carbonate (0.778 g, 5.63 mmol) was added and the mixture was stirred at room temperature for 2 hours. The reaction mixture was then filtered and the salts washed with ethyl acetate. The combined organics were evaporated to give 8-cyclopentyl-6-(2-methoxy-ethoxymethyl)-2-methylsulfanyl-8H-pyrido[2,3-d]pyrimidin-7-one as a waxy solid (1.00 g, 76.3%). 1H NMR δ(400 MHz, CDCl3) 8.60 (s, 1H), 7.71 (t, J=1.6 Hz, 1H), 5.95 (m, 1H), 4.52 (d, J=1.6 Hz, 1H), 3.76 (m, 2H), 3.63 (m, 2H), 3.41 (s, 3H), 2.60 (s, 3H), 2.32 (m, 2H), 2.06 (m, 2H), 1.87 (m, 2H), 1.68 (m, 2H).

1. additionwas added
2. filtrationThe reaction mixture was then filtered
3. washthe salts washed with ethyl acetate
4. customThe combined organics were evaporated