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Tridentate Lewis Acids: Silicon-Functionalised 1,3,5-Triethynylbenzene and 1,3,5-Trivinylbenzene.

Tridentate Lewis Acids: Silicon-Functionalised 1,3,5-Triethynylbenzene and 1,3,5-Trivinylbenzene.

Authors :
Schwartzen, Anna
Siebe, Lena
Schwabedissen, Jan
Neumann, Beate
Stammler, Hans‐Georg
Mitzel, Norbert W.
Source :
European Journal of Inorganic Chemistry; 6/15/2018, Vol. 2018 Issue 22, p2533-2540, 8p, 2 Color Photographs, 5 Diagrams, 6 Charts
Publication Year :
2018

Abstract

Planar tridentate Lewis acids were synthesised by hydrosilylation reactions of triethynylbenzene with chlorosilanes. Hydrogenation of the rigid triethynylbenzene using hydrogen in the presence of Lindlar's catalyst resulted in the formation of trivinylbenzene. The hydrosilylation of this compound enabled the synthesis of flexible tridentate Lewis acids with SiClMe<subscript>2</subscript> and SiCl<subscript>2</subscript>Me, SiCl<subscript>3</subscript> groups. In order to increase the acidity, the chlorine substituents of the tridentate Lewis acids were substituted by fluorine and compounds with SiF<subscript>2</subscript>Me and SiF<subscript>3</subscript> groups were obtained. The Lewis acidity of the isolated compounds was determined with the Gutmann–Beckett method. The results show the presence of cooperative effects of the silyl groups. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
14341948
Volume :
2018
Issue :
22
Database :
Complementary Index
Journal :
European Journal of Inorganic Chemistry
Publication Type :
Academic Journal
Accession number :
130199829
Full Text :
https://doi.org/10.1002/ejic.201800279