2-Benzoyl-4,5-dichlorobenzoic acid → HCID 21463235, compound

Participants

Reaction Steps

Using 2-benzoyl-4,5-dichlorobenzoic acid in lieu of 2-benzoyl-4,5-dimethylbenzoic acid, the procedure of Step 1 of Reference Example 1 was otherwise repeated to provide 6,7-dichloro-4-phenylisocoumarin-3-carboxylic acid [m.p. 243°-244° C. (recrystallized from ethyl acetate-isopropyl ether)]. This compound was reacted and treated in the same manner as in Step 2 of Reference Example 1 to provide the title compound as colorless crystals.

Provenance & Evidence