Borylation, silylation and selenation of C–H bonds in metal sandwich compounds by applying a directing group strategy. (3rd November 2017)

• Record Type: Journal Article
• Authors: Deb, Mayukh; Singh, Jatinder; Mallik, Shuvadip; Hazra, Susanta; Elias, Anil J.
• Is Part Of: New journal of chemistry. Volume 41:Number 23(2017)
• Page Start: 14528
• Page End: 14538
• Publication Date: 2017-11-03
• Subjects: Chemistry -- Periodicals; Chimie -- Périodiques; 540
• DOI: 10.1039/c7nj02388j
• Languages: English
• ISSNs: 1144-0546

Abstract

Abstract : Carbon–heteroatom bond formation in metal-sandwich compounds using C–H activation by selective directing groups. Abstract : Palladium-mediated borylation, silylation, and selenation have been achieved by C–H activation using bidentate directing groups linked on iron and cobalt sandwich compounds. Herein, the first examples of borylation and silylation using pyridine- N -oxide and (2-methylthio)phenyl directing groups have been shown using Pd(OAc)2 as a catalyst. In the case of C–H selenation, the product was formed by treating diphenyl-diselenide with an 8-aminoquinoline-based palladacycle. The novel palladacycle intermediates of the C–B, C–Si, and C–Se bond formation have been isolated and structurally characterized. A correlation between the type of heteroatom added and the donor atom of the installed bi-dentate directing group has also been presented.