反应详情

A solution of 34.9 g. of ethyl p-aminobenzoate, 26.9 g. of 6-phenylhexanol O-methanesulfonate (prepared as described in Example 47) and 200 ml. of hexamethylphosphoramide is heated at 110° C. in an oil bath for 20 hours. The mixture is cooled, diluted with 100 ml. of water and filtered. The solid is washed with 60 ml. of ethanol-water (1:1) to give crude ethyl 4-(6-phenylhexylamino)benzoate. Purification gives the product as crystals, m.p. 69.5°-72.5° C.

1. temperatureThe mixture is cooled
2. additiondiluted with 100 ml
3. filtrationof water and filtered
4. washThe solid is washed with 60 ml