Hydrochloric Acid → HCID 21406505, compound

Participants

Reaction Steps

A solution of 14.5g. of methyl 7-aminofluorene-2-acetic acid in 380ml. of water containing 14ml. of concentrated hydrochloric acid is cooled to 2° and a solution of 3.63g. of sodium nitrite in 15ml. of water added dropwise while stirring. The diazonium solution is added over a 1 hour period while stirring to a refluxing solution of 1.1 liters of water containing 18ml. of sulfuric acid. The mixture is cooled and the solid collected by filtration. The solid is refluxed with 120ml. of 10% aqueous potassium hydroxide solution for 2 hr., and treated with Darco. The suspension is filtered, acidified with hydrochloric acid and the solid collected by filtration, dried, and crystallized from acetonitrile to give 9.4g. of the title compound, 240°-241°d.

Provenance & Evidence