反应详情

To a solution of 5-carboxy-2,4,6-trichloropyrimidine 10.0 g in dimethylformamide 45 ml is added a suspension of 3-chloro-4-methoxybenzylamine 4.82 g and triethylamine 6.98 ml in dimethylformamide 40 ml over a period of 20 minutes on ice bath, and the mixture is stirred for 1 hour. The reaction mixture is diluted with a 10% aqueous citric acid solution and extracted with ethyl acetate. The organic layer is washed, dried and concentrated in vacuo to give 4-(3-chloro-4-methoxybenzylamino)-5-carboxy-2,6-dichloropyrimidine as a pale brown solid, 17.59 g. mp 150–151° C.

1. extractionextracted with ethyl acetate
2. washThe organic layer is washed
3. customdried
4. concentrationconcentrated in vacuo