Tetracyclic silaheterocycle formed through a pericyclic reaction cascade including a two-fold intramolecular C-C bond
Joschua Helmer1, Olli J Pakkanen2, Chris Gendy2
1Institut für Anorganische und Analtische Chemie, Corrensstraße 20-30, 48149 Münster, Germany. lips@uni-muenster.de.
Abstract:
Reductive debromination of the tribromoamidosilane 2 gave the tetracyclic silaheterocycle 3 through a unique reaction cascade involving unprecedented two-fold intramolecular cycloaddition by transient silylenes. Experimental and computational analyses of the reaction mechanism allowed the identification of the key intermediates that lead to the silaheterocycle 3 or, alternatively, to the cyclotrisilene 19.
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