Acetic Acid → HCID 178493620, compound

Participants

Reaction Steps

200 mg. (0.56 mmol) 7,7-dimethyl-2-(2-methoxy-4-methylthiophenyl)-6,7-dihydro-3H,5H-pyrrolo[2,3-f]benzimidazol-6-one were stirred for 48 hours at ambient temperature in 4 ml. glacial acetic acid and 0.4 ml. 30% hydrogen peroxide. 10 ml. water were added thereto and the solvent was removed in a vacuum. There were obtained 160 mg. (75% of theory) of the title compound which, after crystallization from ethanol, had a melting point of 235°-237° C.

Provenance & Evidence