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© Georg Thieme Verlag Stuttgart ˙ New York

Facile [2+2] Cycloaddition of DDQ to an Alkyne: Synthesis of Pyrrolyl- and Indolylbicyclo[4.2.0]octadienes from C-Ethynylpyrroles or C-Ethynylindoles

Boris A. Trofimov*, Lyubov’ N. Sobenina, Zinaida V. Stepanova, Igor’ A. Ushakov, Lidiya M. Sinegovskaya, Tamara I. Vakul’skaya, Al’bina I. Mikhaleva
A. E. Favorsky Irkutsk Institute of Chemistry, Siberian Branch of the Russian Academy of Sciences, 1 Favorsky St., Irkutsk 664033, Russian Federation
Fax: +7(3952)419346; e-Mail: boris_trofimov@irioch.irk.ru;