TY  - JOUR
AB  - 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.
DA  - 2021
DO  - 10.1002/chem.202004088
LA  - eng
IS  - 5
M2  - 1821
PY  - 2021
SP  - 1821-1828
T2  - Chemistry - A European Journal
TI  - Chalice-type tridentate silicon Lewis acids of C3 symmetry in a single step starting from hexadehydrotri-benzo[12]annulene.
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-29484226
Y2  - 2024-11-22T00:58:56
ER  -