Hydrochloric Acid → 2,3,4,9-tetrahydro-1H-carbazole-2-carboxylic acid

Participants

Reaction Steps

A mixture of 3-ketocyclohexanecarboxlic acid (4.78 g, 33.9 mmol) and phenyihydrazine (3.66 g, 40 mmol) in 35 mL of acetic acid was heated under reflux for one hour, then cooled, diluted with water and acidified with HCl. The resultant solid was collected by filtration, washed with water and dried to give 5.5 g of the title compound as a crystalline solid.

Provenance & Evidence