Phthalic Anhydride → HCID 9913145, compound

Participants

Reaction Steps

In a flask were charged 0.05 mol of m-diethyl-aminophenetidine and 0.05 mol of 3-(o-carboxybenzoyl)-1-ethyl-2-methylindole obtained by reacting 1-ethyl-2-methylindole and phthalic anhydride, and 0.3 mol of acetic anhydride was added thereto, followed by heating at 60° to 80° C. The reaction proceeded rapidly, and the reaction system assumed a bluish purple color. The reaction mixture was poured into water, and the precipitated crystals were collected by filtration and recrystallized from toluene to obtain the above-named compound having a melting point of 193° C.

Provenance & Evidence