Nitric Acid → HCID 12902855, compound

Participants

Reaction Steps

A solution of 6 g. (0.018 mole) of the product of step E in hot acetic acid is treated with 6 ml. of 70 percent nitric acid while the solution is maintained at about 80° C. Sodium nitrite (2.7 g., 2 equivalents) is added gradually, and the mixture is heated on a steam bath for 45 minutes. The mixture is then poured into 500 ml. of water. The solid is filtered, recrystallized twice from acetone, then from an ethyl acetate-hexane mixture to provide yellow crystals of 3,5-diphenyl-2-nitrobenzofuran-7-carboxylic acid, m.p. 207°-209° C.

Provenance & Evidence