反应详情

温度

85 °C

A mixture of 3-hydroxy-4-methoxybenzonitrile (34.3 kg), potassium carbonate (54.5 kg) and N,N-dimethylformamide (226 kg) was stirred and heated to approximately 85° C. A toluene solution (91.4 kg) containing N-(3-chloropropyl)morpholine (41.1 kg) was added to the heated mixture and the resultant mixture was heated to about 85° C. for an additional 10 hours. The bulk of the N,N-dimethylformamide was removed by vacuum distillation and the residue was diluted with water (286 liters). The aqueous mixture was extracted with three portions of a 1:1 mixture of heptane and ethyl acetate (239 liters, 139 liters and 139 liters respectively). The combined organic layers were washed with water, concentrated to approximately 150 liters by vacuum distillation and diluted with glacial acetic acid (133 kg). Additional solvent was removed by vacuum distillation. Addition of glacial acetic acid (84 kg) provided a solution of 4-methoxy-3-(3-morpholinopropoxy)benzonitrile (62.5 kg) in acetic acid (122 kg) which was used without further purification.

1. additionwas added to the heated mixture
2. customThe bulk of the N,N-dimethylformamide was removed by vacuum distillation
3. additionthe residue was diluted with water (286 liters)
4. extractionThe aqueous mixture was extracted with three portions of a 1:1 mixture of heptane and ethyl acetate (239 liters, 139 liters and 139 liters respectively)
5. washThe combined organic layers were washed with water
6. concentrationconcentrated to approximately 150 liters by vacuum distillation
7. additiondiluted with glacial acetic acid (133 kg)
8. customAdditional solvent was removed by vacuum distillation
9. additionAddition of glacial acetic acid (84 kg)