Ag. Mustafin et al., Intramolecular cyclization of ortho-(cyclohex-2-enyl)anilines. Modified synthesis of ellipticine, RUSS CHEM B, 48(11), 1999, pp. 2121-2126
It was found that the reactions of arylamines with 3-bromocyclohexene affor
ded hydrocarbazole compounds in 64-78% yields. A modified procedure for the
synthesis of antitumor alkaloid ellipticine was proposed.