反应详情

2,6-Dimethyl-4-chloro-pyrimidine (1.0 g) in ethanol (10 ml) was added slowly to a solution of ethyl isonipecotate (1.1 g) and triethylamine (2.0 ml) in ethanol (20 ml). The reaction was stirred at room temperature overnight. The solvent was removed in vacuo and the residue was partitioned between ethyl acetate and water, washed with water (2×50 ml), dried and evaporated to give 1-(2,6-dimethylpyrimidin-4-yl)-4-(ethoxycarbonyl)piperidine as an oil (1.71 g); NMR (CDCl3): 1.25 (t, 3H), 1.65-1.80 (m, 4H), 1.95-2.00 (m, 2H), 2.55 (s, 3H), 2.45 (s, 3H), 2.50-2.60 (m, 1H), 3.00 (dt, 2H), 4.15 (q, 2H), 4.35 (d, 2H), 6.2 (s, 1H).

1. customThe solvent was removed in vacuo
2. customthe residue was partitioned between ethyl acetate and water
3. washwashed with water (2×50 ml)
4. customdried
5. customevaporated