Aromatic nitro compounds were reduced to the corresponding anilines by refluxing with potassium selenated borohydride (KBH2Se3) prepared from potassium borohydride and selenium in refluxed formamide.
Single-atomic catalysts(SACs)caught considerable attention due to their unique structural properties,complete exposed active site,and 100%atom utilization efficiency with remarkable catalytic activity.Mesoporous singl...Single-atomic catalysts(SACs)caught considerable attention due to their unique structural properties,complete exposed active site,and 100%atom utilization efficiency with remarkable catalytic activity.Mesoporous single-atomic cobalt catalyst with Co-N_(4) active sites was synthesized by using nitrogen-doped graphene derived from acrylonitrile.Single-atomic cobalt was observed by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM)in Co@Nx-C-800.Notably,the density functional theory(DFT)calculation and the extended X-ray absorption fine structures(EXAFS)fitting results indicate that the coordination structure of Co-N is four-coordinated.In this work,the practical hydrogenation of nitroarenes to anilines enabled by Co@Nx-C-800 was established with excellent yields and selectivity,which proved its advantages and potential applications.展开更多
The electrochemical reduction strategy of nitrobenzenes is developed.The chemistry occurs under ambient conditions.The protocol uses inert electrodes and the solvent,DMSO,plays a dual role as a reducing agent.Its synt...The electrochemical reduction strategy of nitrobenzenes is developed.The chemistry occurs under ambient conditions.The protocol uses inert electrodes and the solvent,DMSO,plays a dual role as a reducing agent.Its synthetic value has been demonstrated by the highly efficient synthesis of symmetric,unsymmetric and cyclic azo compounds.展开更多
An iron-catalyzed strategy for the rapid synthesis of indolo[2,3-c]quinolines has been developed.This cascade reaction involving alcohol oxidation,nitro reduction,and oxidative annulation was achieved in a one-pot.The...An iron-catalyzed strategy for the rapid synthesis of indolo[2,3-c]quinolines has been developed.This cascade reaction involving alcohol oxidation,nitro reduction,and oxidative annulation was achieved in a one-pot.The present protocol was started from mono-functionalized indoles and readily available benzylic alcohols/aldehydes,affording a variety of functionalized indolo[2,3-c]quinolines in satisfactory yields.展开更多
文摘Aromatic nitro compounds were reduced to the corresponding anilines by refluxing with potassium selenated borohydride (KBH2Se3) prepared from potassium borohydride and selenium in refluxed formamide.
基金supported by the National Natural Science Foundation of China(Nos.22061017 and 21862006)Science and technology program of Gansu Province(Nos.22YF7GG127 and 23JRRG0002)Hexi University Research Start-up Fund Project(Nos.KYQD2020013).
文摘Single-atomic catalysts(SACs)caught considerable attention due to their unique structural properties,complete exposed active site,and 100%atom utilization efficiency with remarkable catalytic activity.Mesoporous single-atomic cobalt catalyst with Co-N_(4) active sites was synthesized by using nitrogen-doped graphene derived from acrylonitrile.Single-atomic cobalt was observed by aberration-corrected high-angle annular dark-field scanning transmission electron microscopy(HAADF-STEM)in Co@Nx-C-800.Notably,the density functional theory(DFT)calculation and the extended X-ray absorption fine structures(EXAFS)fitting results indicate that the coordination structure of Co-N is four-coordinated.In this work,the practical hydrogenation of nitroarenes to anilines enabled by Co@Nx-C-800 was established with excellent yields and selectivity,which proved its advantages and potential applications.
基金This work was supported by the National Natural Science Foundation of China(Nos.21871226,21502160,21572194)the Scientific Research Fund of Hunan Provincial Education Department(No.19B564).
文摘The electrochemical reduction strategy of nitrobenzenes is developed.The chemistry occurs under ambient conditions.The protocol uses inert electrodes and the solvent,DMSO,plays a dual role as a reducing agent.Its synthetic value has been demonstrated by the highly efficient synthesis of symmetric,unsymmetric and cyclic azo compounds.
基金Financial support from the National Natural Science Foundation of China(Nos.21871226 and 21572194)the Hunan Provincial Natural Science Foundation of China(No.2020JJ5531)+1 种基金the Open Fund of Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates,Guangzhou 510640,China(South China University of Technology)(No.2019B030301003)the Undergraduate Investigated Study and Innovated Experiment Plan from Ministry of Education of China and Hunan Province is gratefully acknowledged.
文摘An iron-catalyzed strategy for the rapid synthesis of indolo[2,3-c]quinolines has been developed.This cascade reaction involving alcohol oxidation,nitro reduction,and oxidative annulation was achieved in a one-pot.The present protocol was started from mono-functionalized indoles and readily available benzylic alcohols/aldehydes,affording a variety of functionalized indolo[2,3-c]quinolines in satisfactory yields.
