4-Chlorotoluene → 2-[2-(4'-Chloro-biphenyl-4-YL)-2-oxo-ethyl]acrylic acid

Participants

Reaction Conditions

Reaction Steps

21.2 g of anhydrous aluminum chloride are introduced into 50 g of p-chlorotoluene and the mixture is heated to 40° C. with stirring. A solid mixture of 8.3 g of itaconic anhydride and 13.2 g of 4-chlorobiphenyl is added in portions in the course of one hour. The reaction mixture is stirred at 40° C. for 30 minutes and then added to 100 g of ice water. The solid reaction product is filtered off and washed twice with water (50 ml). The product is dried at room temperature and about 100 mbar until free of solvent and water. 4-(4′-Chlorobiphenyl-4-yl)-4-keto-2-methylenebutyric acid is obtained in a yield of 70% as a colorless, finely crystalline powder.

Provenance & Evidence