Isopolyperoxo-tungstates and -molybdates with large quaternary ammonium of preparations and catalytic activities in green synthesis of adipic acid

ORGN 488

Wenshuai Zhu, lihm@ujs.edu.cn1, Huaming Li, lihm@ujs.edu.cn1, Xiaoying He2, Huoming Shu1, Chunxiang Li1, and Haiyan Ji3. (1) Department of Chemistry and Chemical Engineering, Jiangsu University, 301 Xuefu Road, Zhenjiang, 212013, China, (2) Department of Chemistry and Chemical Engineering, China West Normal University, (3) Department of Material and Engineering, Jiangsu University

Six new large quaternary ammonium isopolyperoxo-tungstates and -molybdates, such as [C16H33N(CH3)3]2[W2O3(O2)4](I), [C16H33C5H5N]2[W2O3(O2)4](II), [C6H5CH2C12H25(CH3)2N]2W2O3(O2)4(III), [C16H33N(CH3)3]2[Mo2O3(O2)4](IV), [C16H33C5H5N]2[Mo2O3(O2)4](V), [C6H5CH2C12H25(CH3)2N]2Mo2O3(O2)4(VI) have been synthesized and characterized by element analysis, gravimetry, chemistry titration, TG-DSC, FT-IR and UV-Vis. Catalytic activity of I-VI for the 30(wt.)% H2O2 green oxidation of cyclohexene, cyclohexanol, cyclohexanone and 1,2-cyclohexanediol to adipic acid(AA) was evaluated for the first time. It was found that W analogous catalysts exhibited good activity, which oxidation of cyclohexene to AA in the temperature of 90oC for 20 hours with 77.8% to 79.6% yields and oxidation of cyclohexanol and cyclohexanone with 51.8% to 53.3% and 46.0% to 60.7% yields respectively. However, Mo analogous catalysts exhibited less activities. The catalytic system was carried out without organic solvent and halogen conditions in an economically, technically, and environmentally satisfying manner. So the oxidation procedures meet the needs of contemporary green chemistry and suitable for practical organic synthesis.

 

 

New Reactions and Methodology, Heterocycles and Aromatics, Bioorganic Chemistry
8:00 PM-10:00 PM, Tuesday, 12 September 2006 Moscone Center -- Hall D, Poster

Division of Organic Chemistry

The 232nd ACS National Meeting, San Francisco, CA, September 10-14, 2006