General Reductive Amination of Aldehydes and Ketones with Amines and Nitroaromatics under <scp>H<sub>2</sub></scp> by Recyclable Iridium Catalysts

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  • Dejun Sui
    State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing Jiangsu 210009 China
  • Fei Mao
    State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing Jiangsu 210009 China
  • Haipeng Fan
    State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing Jiangsu 210009 China
  • Zhengliang Qi
    State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing Jiangsu 210009 China
  • Jun Huang
    State Key Laboratory of Materials‐Oriented Chemical Engineering, College of Chemical Engineering Nanjing Tech University Nanjing Jiangsu 210009 China

抄録

<jats:p>Heterogeneous iridium catalysts were prepared and applied for the reductive amination of aldehydes and ketones with nitroaromatics and amines using <jats:styled-content style="fixed-case">H<jats:sub>2</jats:sub></jats:styled-content>. The iridium catalysts were prepared by pyrolysis of ionic liquid 1‐methyl‐3‐cyanomethylimidazoulium chloride ([<jats:styled-content style="fixed-case">MCNI</jats:styled-content>]Cl) with iridium chloride (<jats:styled-content style="fixed-case">IrCl<jats:sub>3</jats:sub></jats:styled-content>) in activated carbons. Iridium particles were well dispersed and stable in the N‐doped carbon materials from [<jats:styled-content style="fixed-case">MCNI</jats:styled-content>]Cl with activated carbon. The Ir@<jats:styled-content style="fixed-case">NC</jats:styled-content>(600‐2h) catalyst was found to be highly active and selective for the reductive amination of aldehydes and ketones using <jats:styled-content style="fixed-case">H<jats:sub>2</jats:sub></jats:styled-content> and a variety of nitrobenzenes and amines were selectively converted into the corresponding secondary and tertiary amines. The Ir@<jats:styled-content style="fixed-case">NC</jats:styled-content>(600‐2h) catalyst can be reusable several times without evident deactivation.</jats:p>

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