title: Cooperative Catalytic Activation of Si-H Bonds: CO2-Based Synthesis of Formamides from Amines and Hydrosilanes under Mild Conditions.
abstract: A simple cooperative catalytic system was successfully developed for the solvent-free N-formylation of amines with CO2and hydrosilanes under ambient conditions, which was composed of a Zn(salen) catalyst and quaternary ammonium salt. These commercially available binary components activated the Si-H bonds effectively, owing to the intermolecular synergistic effect between Lewis base and transition metal center (LB-TM), and subsequently facilitated the insertion of CO2to form the active silyl formats, thereby leading to excellent catalytic performance at a low catalyst loading. Furthermore, the bifunctional Zn(salen) complexes, with two imidazolium-based ionic-liquid (IL) units at the 3,3'-position of salen ligand, acted as intramolecularly cooperative catalysts, and the solvent-regulated separation resulted in facile catalyst recycling and reuse.
authors.affiliation: School of Chemistry, Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Rongchang
authors.initials: R
authors.lastname: Luo
authors.affiliation: School of Chemistry, Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Xiaowei
authors.initials: X
authors.lastname: Lin
authors.affiliation: School of Chemistry, Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Yaju
authors.initials: Y
authors.lastname: Chen
authors.affiliation: School of Chemistry, Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Wuying
authors.initials: W
authors.lastname: Zhang
authors.affiliation: School of Chemistry, Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Xiantai
authors.initials: X
authors.lastname: Zhou
authors.affiliation: School of Chemistry, Key Laboratory of Low-Carbon Chemistry & Energy Conservation of Guangdong Province, Sun Yat-sen University, Guangzhou, 510275, P. R. China.
authors.forename: Hongbing
authors.initials: H
authors.lastname: Ji
mesh_terms: D000588:Amines / Q000737:chemistry*; D002384:Catalysis; D060326:Chemistry Techniques, Synthetic; D005029:Ethylenediamines / Q000737:chemistry; D005559:Formamides / Q000138:chemical synthesis* / Q000737:chemistry*; D006859:Hydrogen / Q000737:chemistry*; D009942:Organometallic Compounds / Q000737:chemistry; D012821:Silanes / Q000737:chemistry*; D012825:Silicon / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry; D015032:Zinc / Q000737:chemistry
chemical_list: D000588:Amines; D005029:Ethylenediamines; D005559:Formamides; D009942:Organometallic Compounds; D012821:Silanes; D012997:Solvents; D006859:Hydrogen; C011452:disalicylaldehyde ethylenediamine; D015032:Zinc; D012825:Silicon
keywords: carbon dioxide; cooperative catalysis; formylation; ionic liquid; salen zinc