Anthranilic Acid → Benzoic acid, 2,2'-[(9,10-dihydro-9,10-dioxo-1,5-anthracenediyl)diimino]bis-

Participants

Reaction Conditions

Reaction Steps

A mixture of 1,5-dichloroanthraquinone (12.0 g.), anthranilic acid (37.0 g.), magnesium oxide (3.2 g.), cupric oxide (0.8 g.), potassium hydroxide (15.0 g.), water (60 ml), and isobutyl alcohol (6 ml) was heated in an autoclave at 150° C. for 20 hrs. The reaction mixture was diluted with 500 ml water, acidified with sulfuric acid (15 ml), and then heated to 80°-85° C. with stirring. After cooling, the product was collected by filtration and washed with water. The dried product was purified by recrystallization from N-methyl-2-pyrrolidinone. This product is one of the most preferred comonomers.

Provenance & Evidence