2,3-dihydro-1H-indol-7-yl(phenyl)methanone → (1H-Indol-7-yl)(phenyl)methanone

Participants

Reaction Steps

A reaction vessel is charged with 2.23 liters of methylene chloride to which is added one mole of the 7-benzoylindoline obtained in Example 1. To this mixture is added 3.0 moles of activated manganese dioxide. This reaction mixture is agitated and heated at reflux for 24 hours to produce 7-benzoylindole. The produce is then filtered through a filter that will retain the manganese dioxide. The reaction vessel is rinsed with 0.2 liter of hot methylene chloride and the filter cake washed with this rinse. The 7-benzoylindole product obtained has a melting point of 100°-104.5° C.

Provenance & Evidence