Electrophilic Organobismuth Dication Catalyzes Carbonyl Hydrosilylation

Kannan, R and Balasubramaniam, S and Kumar, S and Chambenahalli, R and Jemmis, ED and Venugopal, A (2020) Electrophilic Organobismuth Dication Catalyzes Carbonyl Hydrosilylation. In: Chemistry - A European Journal, 26 (56). pp. 12717-12721.

PDF che_eur_jou_26-56_12717-12721_2020.pdf - Published Version Restricted to Registered users only Download (4MB) | Request a copy

Abstract

Bismuth compounds are gaining importance as potential alternatives to transition-metal complexes and electron deficient lighter p-block compounds in homogeneous catalysis. Computational analysis on the two-coordinate [(Me2NC6H4)Bi]2+ possessing three electrophilic sites is experimentally evidenced by the isolation of [{Me2NC6H4}Bi{OP(NMe2)3}3][B(3,5-C6H3Cl2)4]2. These observations led us to generate dicationic organobismuth catalyst, [(Me2NC6H4)Bi(L)3]2+ (L=aldehyde/ketone), evidenced by NMR spectroscopy in solution and by single-crystal X-ray diffraction in the solid state. It efficiently catalyzes hydrosilylation of aldehydes and ketones resulting in silyl ethers as the only products in high yields. Our investigations support a carbonyl activation mechanism at the bismuth center followed by Si−H addition. © 2020 Wiley-VCH GmbH

Item Type:	Journal Article
Publication:	Chemistry - A European Journal
Publisher:	Wiley-VCH Verlag
Additional Information:	The copyright for this article belongs to Wiley-VCH Verlag.
Keywords:	Aldehydes; Bismuth metallography; Catalysis; Hydrosilylation; Ketones; Metal complexes; Nuclear magnetic resonance spectroscopy; Single crystals; Transition metal compounds; Transition metals, Carbonyl activation; Computational analysis; Electron-deficient; Electrophilic site; High yield; Homogeneous catalysis; Silyl ethers; Single crystal x-ray diffraction, Bismuth compounds
Department/Centre:	Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited:	13 Feb 2023 04:11
Last Modified:	13 Feb 2023 04:11
URI:	https://eprints.iisc.ac.in/id/eprint/80195

Actions (login required)

View Item