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Communication | Regular issue | Vol 27, No. 3, 1988, pp.639-642
Published online, 1st January, 1970
DOI: 10.3987/COM-87-4419
Selenonium Ylides of Cyclopentadiene, Indole and Pyrrole

Klaus Hartke* and Hans Henning Wendebourg

*Institut für Pharmazeutische Chemie, Universität Marburg, Marbacher Weg 6, D-35032 Marburg/Lahn, Germany


Selenonium cyclopentadienides 3 have been prepared from (trimethylsilyl)cyclopentadiene and dialkyl or diaryl selenoxides. Selenonium salts of indole and pyrrole are accessible by an electrophilic substitution with selenoxides and trifluoracetic anhydride. In some cases deprotonation leads to stable ylides.