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A solution of 27.5 g (0.125 mol) of 3,4-dichloroanilinoacetic acid, 190 ml of dichloroethane, 15 ml (0.2 mol) of ethanol and 1.5 ml of concentrated H2SO4 is heated for 4 hours under reflux. It is washed with water and with dilute sodium bicarbonate, dried and evaporated to dryness in vacuo. The ester is recrystallised from ethanol and is obtained in a yield of 78%. It melts at 103°-104° C.

1. temperatureunder reflux
2. washIt is washed with water and with dilute sodium bicarbonate
3. customdried
4. customevaporated to dryness in vacuo
5. customThe ester is recrystallised from ethanol
6. customis obtained in a yield of 78%