Affiliation:
1. Institut für Anorganische Chemie Rheinische Friedrich-Wilhelms-Universität Bonn Gerhard-Domagk-Straße 1 53121 Bonn Germany
2. Department of Chemistry Faculty of Pure and Applied Sciences University of Tsukuba Institute of Natural Sciences B-506 1-1-1 Tennodai Tsukuba Ibaraki 305-8571 Japan
Abstract
AbstractTo establish some steric protection at the P center of a tricyclic 1,4‐dihydro‐1,4‐phosphasiline, the potassium salt of a tricyclic 1,4‐dihydro‐1,4‐phosphasilin‐1‐ide was treated with triphenylmethyl chloride. Subsequently, the two Si‐bound diethylamino groups, were converted to give the SiCl2 derivative using HCl. The Si‐functionality could be used in substitution reactions thus giving Si‐dimethyl and Si‐dimethoxy derivatives. Reduction of the SiCl2 derivative at low temperature gave transient tricyclic silylene which could not be detected by NMR spectroscopy but successfully trapped by 1,3‐butadiene to give a P‐containing spiro‐silolene derivative. DFT studies provide insight into reduction and the silylene formation.
Funder
Alexander von Humboldt-Stiftung