2,3-Dichloro-5,6-dicyano-1,4-benzoquinone → HCID 19808754, compound

Participants

Reaction Steps

To 5 ml of o-dichlorobenzene were added 50 mg of dimethyl 1-chloro-5,6,7,8-tetrahydrocarbazole-3,4-dicarboxylate and 80 mg of DDQ. The mixture was refluxed for 1 hour. The solvent was removed by distillation under reduced pressure. The residue was purified by column chromatography (eluant: toluene/ethyl acetate=1/0 to 20/1) to obtain 40 mg (yield: 81%) of dimethyl 1-chlorocarbazole-3,4-dicarboxylate as colorless crystals.

Provenance & Evidence