title: Lewis acid triggered reactivity of a Lewis base stabilized scandium-terminal imido complex: C-H bond activation, cycloaddition, and dehydrofluorination.
abstract: A stable scandium-terminal imido complex is activated by borane to form an unsaturated terminal imido complex by removing the coordinated Lewis base, 4-(dimethylamino)pyridine, from the metal center. The ensuing terminal imido intermediate can exist as a THF adduct and/or undergo cycloaddition reaction with an internal alkyne, C-H activation of a terminal alkene, and dehydrofluorination of fluoro-substituted benzenes or alkanes at room temperature. DFT investigations further highlight the ease of C-H activation for terminal alkene and fluoroarene. They also shed light on the mechanistic aspects of these two reactions.
authors.affiliation: State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences , 345 Lingling Road, Shanghai 200032, P. R. China.
authors.forename: Jiaxiang
authors.initials: J
authors.lastname: Chu
authors.forename: Xianghao
authors.initials: X
authors.lastname: Han
authors.forename: Christos E
authors.initials: CE
authors.lastname: Kefalidis
authors.forename: Jiliang
authors.initials: J
authors.lastname: Zhou
authors.forename: Laurent
authors.initials: L
authors.lastname: Maron
authors.forename: Xuebing
authors.initials: X
authors.lastname: Leng
authors.forename: Yaofeng
authors.initials: Y
authors.lastname: Chen