Synthesis of Transition Metal Complexes with Aza-Crown Substituted Unsymmetrical Salicylaldimine Bis-Schiff Base Ligands and Metal Schiff Base Complex Catalysed Oxidation of P-Xylene to P-Toluic Acid-Reference-Cited by-同舟云学术

Synthesis of Transition Metal Complexes with Aza-Crown Substituted Unsymmetrical Salicylaldimine Bis-Schiff Base Ligands and Metal Schiff Base Complex Catalysed Oxidation of P-Xylene to P-Toluic Acid

Published:2012-07 Issue:7 Volume:36 Page:425-428
ISSN:1747-5198
Container-title:Journal of Chemical Research
language:en
Short-container-title:Journal of Chemical Research

Author:

Li Jian-zhang¹,Yang Zhu-zhu¹,He Xi-yang¹,Zeng Jun¹,Zhang Jin²

Affiliation:

1. Key Laboratory of Green Catalysis of Higher Education Institutes of Sichuan, School of Chemistry and Pharmaceutical Engineering, Sichuan University of Science & Engineering, Zigong, Sichuan, 643000, P. R. China

2. Department of Chemistry and Environment Science, Chongqing University of Arts and Science, Yongchuan, Chongqing, 402160, P. R. China

Abstract

Four unsymmetrical, salicylaldimine bis-Schiff bases with pendant benzo-10-aza-15-crown-5- or morpholino-groups and their 1:1 (ligand /metal) complexes with cobalt, copper and manganese have been synthesised and studied as catalysts in the aerobic oxidation of p-xylene to p-toluic acid. Significant selectivity (up to −90%) and conversion levels (up to −70%) were obtained. The effects of the pendant aza-crown ether group in Mn(III) Schiff base complexes on the oxidation of p-xylene were also investigated by comparison with analogues having pendant morpholino-groups.

Publisher

SAGE Publications

Subject

General Chemistry

Link

http://journals.sagepub.com/doi/pdf/10.3184/174751912X13377751456987

Reference21 articles.

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