Bibliographic Metadata
Bibliographic Metadata
- TitleChalice-type tridentate silicon Lewis acids of C3 symmetry in a single step starting from hexadehydrotri-benzo[12]annulene.
- Author
- Is part ofChemistry - A European Journal, Vol. 27 Issue 5, page 1821-1828
- Published
- LanguageEnglish
- Document typeJournal Article
- URN
- DOI
Restriction-Information
- The document is publicly available on the WWW
Links
- Social MediaShare
- ReferenceNo Reference available
- IIIF
Files
Classification
Abstract
Tridentate Lewis acids with aligned functions were syn-thesized based on the rigid framework hexadehydrotribenzo[12]annu-lene. The backbone and its fluorinated analogue were synthesised in one-pot syntheses, with alkyne deprotection and Sonogashira cross coupling reaction being carried out in one step. Hydrosilylation of the annulene with chlorohydrosilanes proceeded highly selectively and afforded rigid poly-Lewis acids with three SiCl 3 or SiCl 2 Me substitu-ents perfectly oriented to one side of the molecule in a single step. The progress of hydrosilylation was investigated by time-correlated NMR spectroscopic studies. The crystal structures show that the framework is symme-trically functionalised and the silyl substituents are aligned in one direction. To increase the acidity of the Lewis acids the chlorosilyl substituents were fluorinated with SbF 3 . Further investigation of hydrometallation reactions (M = B, Al, Ga, Sn) did not lead to corresponding structures. © 2020 Wiley-VCH GmbH.
Stats
- The PDF-Document has been downloaded 6 times.
License/Rightsstatement
