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Communication | Regular issue | Vol 51, No. 4, 1999, pp.733-736
Published online, 1st January, 1970
DOI: 10.3987/COM-98-8468
5-exo,5-exo Cascade Cyclizations of Halo-Olefins by Environmentally Friendly Reaction Using Indirect Electrolysis

Akira Katsumata, Kiyosei Takasu, and Masataka Ihara*

*Graduate School of Pharmaceutical Sciences, Tohoku University, Aobayama, Sendai 980-5878, Japan


[Ni(cyclam)](ClO4)2 or vitamin B12a-mediated electroreduction of the 1-bromo-5-ene-10-yne (4) and the l-bromo-5,10-diene (6) gave bicyclic five-membered ring compounds in a highly regioselective manner by 5-exo,5-exo cascade radical cyclizations.