XIAO Yi1,2, HUANG Hongmei1, YIN Dulin1,2* ,YUE Liyan2, MAO Liqiu2, WANG Jihui3
(1 Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education; 2Institute of Fine Catalysis and Synthesis; 3 Key Laboratory of Resource Fine-Processing and Advanced Materials of Hunan Province, Hunan Normal University,Changsha 410081, Hunan, China)
Abstract: The modification effect of organic bases on the oxidation of p-propenylanisole to anisaldehyde with H2O2 catalyzed by oxovanadium aromatic carboxylates was studied using N,N-dimethylformamide (DMF) and heterocyclic nitrogen bases as additives. The effects of catalyst property, additive type, DMF amount and reaction time on the reaction were investigated. It was found that DMF can serve as a mild Lewis base and a pH value modifier in remarkably tuning the conversion of p-propenylanisole and the selectivity for anisaldehyde. The results showed that 97% conversion of p-propenylanisole and 89% selectivity for anisaldehydewere achieved over 0.5% oxovanadium(IV) phthalate complex(OPC)(IV) in DMF-CH3CN (6% v/v) with stoichiometric amount of H2O2 (H2O2 : p-propenylanisole = 2:1) after 5 h reaction at 30℃.
Key words: Oxovanadium aromatic carboxylate; Hydrogen peroxide; Catalytic oxidation; p-Propenylanisole; N,N-Dimethylformamide
E-mail: dulinyin@126.com
Journal of Molecular Catalysis, Vol. 25, Issue 3, 2011, 233~237
