Phthalic Anhydride → HCID 12248790, compound

Participants

Reaction Steps

A mixture of 5.0 g (0.03 mole) of 5-methoxy-2-methylindole and 4.6 g (0.03 mole) of phthalic anhydride in 25 ml of ethylene dichloride was refluxed for ten hours, cooled to room temperature and the separated solid was collected by filtration and dried to obtain 2-[(2-methyl-5-methoxy-3-indolyl)carbonyl]-benzoic acid (Formula VIII: R°=R1 =R2 =R3 =R6 =H; R5 =CH3 ; Y1 =OCH3), as a pale pink-colored solid which decomposed at 203°-204° C. The nuclear magnetic resonance and infrared spectra were consistent with the assigned structure.

Provenance & Evidence