反应详情

温度

140 °C

6.7 g (39 mmol) of ethyl 2-chloronicotinate, 8.2 g (51 mmol) of 4-(N,N-dimethylaminomethyl)styrene, 9.9 g (98 mmol) of triethylamine, 0.36 g of palladium(II) acetate and 0.96 [lacuna] of tri(o-tolyl)phosphine were mixed in 150 ml of dimethylformamide and, after addition of 1 ml of water, stirred at 140° C. for 13 h. The reaction mixture was then concentrated in vacuo, and the resulting residue was partitioned between ethyl acetate and water. The organic phase was separated off, washed with water, dried and concentrated in vacuo. The residue was then crystallized as oxalate from isopropanol after addition of an equivalent amount of oxalic acid. 4.1 g (27%) of the product were obtained as monooxalate.

1. concentrationThe reaction mixture was then concentrated in vacuo
2. customthe resulting residue was partitioned between ethyl acetate and water
3. customThe organic phase was separated off
4. washwashed with water
5. customdried
6. concentrationconcentrated in vacuo
7. customThe residue was then crystallized as oxalate from isopropanol
8. additionafter addition of an equivalent amount of oxalic acid