A simple hydroxypyridine ionic liquids for conversion of CO_(2)into quinazoline-2,4(1H,3H)-diones under atmospheric conditions  

作　　者：Bowen Jiang Meiling Weng Jigang An Yuewei Fan Jia Liu Ying Liu Ting Yu Leizhi zheng Guoqiang Yang Zhibing Zhang 

机构地区：[1]School of Chemistry and Chemical Engineering,Nanjing University,Nanjing 210093,China [2]School of Materials Science and Engineering,Suzhou University of Science and Technology,Suzhou 215009,China

出　　处：《Chinese Journal of Chemical Engineering》2023年第10期217-224,共8页中国化学工程学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(22278202);the Natural Science Foundation of Jiangsu Province(BM2018007.BK20210185).

摘　　要：The transformation of CO_(2)into high value-added product is a promising pathway for utilizing CO_(2).However,the process tends to require harsh reaction conditions owing to CO_(2)chemical inertness.Designing a high efficiency catalytic system with environmentally benign characteristic are important determinants.In this work,protic ionic liquids[TMG][2-OPy]were prepared via one-step neutralization between 1,1,3,3-tetramethylguanidine and 2-hydroxypyridine,applying to the domain of synthesizing quinzoline-2,4(1 H,3H)-diones from CO_(2)and 2-aminobenzontiles without any solvent or metal,achieving the yield of 97%at 90℃for 8 h under atmospheric.A series of substrates with good to acceptable yield were detected,revealing the generality and universality of the catalyst.Furthermore,the system could be facilely reused for at least six runs,retaining the yield of 94%.A preliminary kinetic equation is calculated with the activation energy of 68 kJ·mol^(-1),and a plausible reaction mechanism was put forward.This study highlights that the[TMG][2-OPy]enables to activate CO_(2)carboxylation efficiently.

关 键 词：CO_(2)conversion Homogeneous catalyst Ionic liquids Reaction kinetic 

分 类 号：TQ203.2[化学工程—有机化工] X701[环境科学与工程—环境工程]