Lignin-derived Zn single atom/N-codoped porous carbon forα-alkylation of aromatic ketones with alcohols via borrowing hydrogen strategy  

作　　者：Xueping Zhang Guo-Ping Lu Kun Wang Yamei Lin Pengcheng Wang Wenbin Yi 

机构地区：[1]School of Chemistry and Chemical Engineering,Nanjing University of Science&Technology,Xiaolingwei 200,Nanjing 210094,China [2]School of Pharmaceutical Sciences,Wenzhou Medical College,University Town,Chashan,Wenzhou 325035,China [3]School of Food Science and Pharmaceutical Engineering,Nanjing Normal University,Wenyuanstreet 200,Nanjing 210032,China

出　　处：《Nano Research》2022年第3期1874-1881,共8页纳米研究（英文版）

基　　金：the Fundamental Research Funds for the Central Universities(No.30920021120);the National Natural Science Foundation of China(Nos.32001266,21776138,and 22078161)for financial support.

摘　　要：A green and scalable strategy has been developed for the synthesis of lignin-derived Zn single atom/N-codoped porous carbon(LCN@Zn-SAC)containing similar ZnNx sites with carbonic anhydrases.This catalyst exhibits superior activity on theα-alkylation of ketones with alcohols via borrowing hydrogen strategy(TON up to 15 h^(−1))than most of previously reported works.The dehydrogenation of benzyl alcohol is the rate-determining step based on kinetic experiment results.According to experimental and theoretical calculation results,Zn electron density is inversely proportional to reaction energy barriers,because Zn sites with less positive charge(ZnN_(4) and ZnN_(3)C)in Zn-SACs display better borrowing hydrogen ability than other Zn sites.Furthermore,this catalyst can be recycled by simple centrifugation,which can be reused at least 8 runs with no obvious lose in activity.To the best of our knowledge,this is the first example of non-noble metal-SAC-catalyzedα-alkylation via borrowing hydrogen strategy.

关 键 词：lignin zinc single atom catalyst N-doped porous carbon α-alkylation borrowing hydrogen 

分 类 号：O62[理学—有机化学]