Das, Agnideep; Schleinitz, Jules; Karmazin, Lydia; Vincent, Bruno; Le Breton, Nolwenn; Rogez, Guillaume; Guenet, Aurelie; Choua, Sylvie; Grimaud, Laurence; Desage-El Murr, Marine published the artcile< A Single Bioinspired Hexameric Nickel Catechol-Alloxazine Catalyst Combines Metal and Radical Mechanisms for Alkene Hydrosilylation>, HPLC of Formula: 27841-33-4, the main research area is hexameric nickel catechol alloxazine complex preparation hydrosilylation alkene catalyst; crystal structure mol hexameric nickel catechol alloxazine complex preparation; radical mechanism alkene hydrosilylation hexanickel catechol alloxazine catalyst safety; alloxazine; chain walking; nickel catalysis; radical chemistry; redox-active ligands.
Mechanisms combining organic radicals and metallic intermediates hold strong potential in homogeneous catalysis. Such activation modes require careful optimization of two interconnected processes: one for the generation of radicals and one for their productive integration towards the final product. We report that a bioinspired polymetallic nickel complex can combine ligand- and metal-centered reactivities to perform fast hydrosilylation of alkenes under mild conditions through an unusual dual radical- and metal-based mechanism. This earth-abundant polymetallic complex incorporating a catechol-alloxazine motif as redox-active ligand operates at low catalyst loading (0.25 mol%) and generates silyl radicals and a nickel-hydride intermediate through a hydrogen atom transfer (HAT) step. Evidence of an isomerization sequence enabling terminal hydrosilylation of internal alkenes points towards the involvement of the nickel-hydride species in chain walking. This single catalyst promotes a hybrid pathway by combining synergistically ligand and metal participation in both inner- and outer- sphere processes.
Chemistry – A European Journal published new progress about Alkenes Role: RCT (Reactant), SPN (Synthetic Preparation), RACT (Reactant or Reagent), PREP (Preparation). 27841-33-4 belongs to class chlorides-buliding-blocks, and the molecular formula is C8H12N2O2, HPLC of Formula: 27841-33-4.
Referemce:
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics