Cyclic Amino(Ylide) Silylene: A Stable Heterocyclic Silylene with Strongly Electron‐Donating Character |
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| Authors: | Dr Isabel Alvarado‐Beltran Dr Antoine Baceiredo Dr Nathalie Saffon‐Merceron Prof Vicenç Branchadell Dr Tsuyoshi Kato |
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| Institution: | 1. http://hfa.ups‐tlse.fr;2. Université de Toulouse, UPS, and CNRS, LHFA UMR 5069, Toulouse cedex 9, France;3. Université de Toulouse, UPS, ICT-FR2599, Toulouse cedex 9, France;4. Departament de Química, Universitat Autònoma de Barcelona, Bellaterra, Spain |
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| Abstract: | An isolable heterocyclic silylene ( 4 ) with two different π‐donating substituents, namely a classical amino group and a more electropositive and stronger carbon‐based π‐donating phosphonium ylide, was synthesized and fully characterized. The combination of these two different π‐donating substituents confers high thermal stability and an unusual nucleophilic character on silylene 4 . Therefore, silylene 4 behaves as a strong donor ligand toward transition metals with a donating character comparable to N‐heterocyclic carbenes, in contrast to classical N‐heterocyclic silylenes, which generally present a weak donating character. |
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| Keywords: | heterocycles ligand design ligand effects main-group chemistry silylenes |
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