Hydrochloric Acid → 4-[4-(6-cyanopyridin-3-yl)-9H-carbazol-9-yl]-2-[(3-hydroxypropyl)amino]benzoic acid

Participants

Reaction Conditions

Reaction Steps

8 ml of 1N hydrochloric acid are added to a solution of 0.7 g of 2-methylpropan-2-yl 4-[4-(6-cyanopyridin-3-yl)-9H-carbazol-9-yl]-2-[(3-hydroxypropyl)amino]benzoate in 10 ml of dioxane. The reaction mixture is heated at 100° C. in a microwave for 2 hours and then concentrated under reduced pressure. The residue is purified by silica gel chromatography, elution being carried out with a mixture of dichloromethane and methanol (96/4 by volume), so as to give 190 mg of 4-[4-(6-cyanopyridin-3-yl)-9H-carbazol-9-yl]-2-[(3-hydroxypropyl)amino]benzoic acid in the form of a pale yellow powder the characteristics of which are the following:

Provenance & Evidence