Synthesis and characterization of a novel ruthenium(ii) trisbipyridine complex magnetic nanocomposite for the selective oxidation of phenols

Zhengxin Fei; Feng Chen; Mingqiang Zhong; Jianping Qiu; Weidong Li; Seyed Mohsen Sadeghzadeh

doi:10.1039/c9ra05079e

Synthesis and characterization of a novel ruthenium(ii) trisbipyridine complex magnetic nanocomposite for the selective oxidation of phenols

RSC Adv. 2019 Sep 6;9(48):28078-28088. doi: 10.1039/c9ra05079e. eCollection 2019 Sep 3.

Authors

Zhengxin Fei^{1

2}, Feng Chen¹, Mingqiang Zhong¹, Jianping Qiu², Weidong Li³, Seyed Mohsen Sadeghzadeh^{4

5}

Affiliations

¹ College of Material Science and Engineering, Zhejiang University of Technology Hangzhou 310014 China.
² Jinhua Polytechnic Jinhua 321007 China.
³ Polytechnic Institute of Qianjiang College, Hangzhou Normal University Hangzhou 310018 China lwd@hznu.edu.cn.
⁴ New Materials Technology and Processing Research Center, Department of Chemistry, Neyshabur Branch, Islamic Azad University Neyshabur Iran.
⁵ Young Researchers and Elite Club, Neyshabur Branch, Islamic Azad University Neyshabur Iran.

Abstract

Anchoring ruthenium(ii) trisbipyridine complex [Ru(Bpy)₃]²⁺ into a magnetic dendritic fibrous silica nanostructure produces an unprecedented strong nanocatalyst, FeNi₃/DFNS/[Ru(Bpy)₃]²⁺. Impressive oxidation of phenols to 1,4-benzoquinones catalyzed by FeNi₃/DFNS/[Ru(Bpy)₃]²⁺ is obtained in acetonitrile and water solution with molecular dioxygen as oxidant. Exclusively, apparently inert phenols such as phenol itself and mono-alkyl-substituted phenols are impressively oxidized to produce 1,4-benzoquinones through activation of the C-H bond in the position para to the carbon-oxygen bond under mild conditions. In addition, the production of industrially significant quinones that are known intermediates for vitamin combinations is investigated and studied FeNi₃/DFNS/[Ru(Bpy)₃]²⁺ magnetic nanoparticles were produced, and their properties were investigated by AFM, FTIR, XRD, TGA, SEM, TEM, and VSM.