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Organoaluminum Cation Catalyzed Selective Hydrosilylation of Carbonyls, Alkenes, and Alkynes.
- Source :
-
European Journal of Inorganic Chemistry . 3/18/2022, Vol. 2022 Issue 8, p1-11. 11p. - Publication Year :
- 2022
-
Abstract
- The N,N'‐chelated β‐diketiminate analogue i. e. conjugated bis‐guanidine (CBG) ligand L(3H) [L= {(ArHN)(ArN)−C=N−C=(NAr)(NHAr)}; Ar=2,6‐Et2‐C6H3], has been used to synthesize mono‐ and dinuclear Al(III) dimethyl complexes, [L(2H) AlMe2] (1) and [L(H)(AlMe2)2] (2). Compounds 1 and 2 are synthesized by deprotonation method using free ligand and appropriate stoichiometric amounts of AlMe3 and are structurally characterized by a single‐crystal X‐ray diffraction technique. Moreover, the reaction of compound 1 with B(C6F5)3 afforded a three‐coordinate aluminum methyl cation [L(2H)AlMe]+ [MeB(C6F5)3]−3 in good yield. Compound 3 was thermally stable and characterized by multinuclear NMR spectroscopy. Furthermore, we demonstrated that compound 3 catalyzed hydrosilylation of carbonyls, alkenes, and alkyne with triethylsilane (HSiEt3) under solvent‐free conditions. We found that catalyst 3 is also effective for large‐scale hydrosilylation reactions. Additionally, we have shown that compound 3 catalyzed benzaldehyde's intermolecular chemoselective hydrosilylation over other reducible functional groups. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 14341948
- Volume :
- 2022
- Issue :
- 8
- Database :
- Academic Search Index
- Journal :
- European Journal of Inorganic Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 155893758
- Full Text :
- https://doi.org/10.1002/ejic.202101030