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Citation: ZHANG Weidong, HE Jun, GONG Haiwei, ZHANG Peng, XIE Zhengfeng. Epoxidation of α,β-Unsaturated Ketones Catalyzed by Schiff Base Functionalized MCM-41 and Potassium Carbonate[J]. Chinese Journal of Applied Chemistry, ;2013, 30(11): 1310-1318. doi: 10.3724/SP.J.1095.2013.30061 shu

Epoxidation of α,β-Unsaturated Ketones Catalyzed by Schiff Base Functionalized MCM-41 and Potassium Carbonate

a. Key Laboratory of Oil & Gas Fine Chemicals, Ministry of Education & Xinjiang Uyghur Autonomous Region, College of Chemistry and Chemical Engineering, Xinjiang University, Urumqi 830046, China;
b. The Oil Refinery of Petrochina Dushanzi Petrochemical Company, Dushanzi 833600, China

Received Date: 25 January 2013
Revised Date: 26 March 2013

Mesoporous molecular sieves MCM-41 supported Schiff base was prepared from MCM-41,3-chloropropyltriethoxysilane,dis-thiocarbohydrazone and salicylide.Both as-prepared supported catalyst and K₂CO₃ were used to catalyze the epoxidation of α,β-unsaturated ketones in the presence of H₂O₂. All products from these oxidations were characterized by ¹H NMR and IR. The effects of reaction conditions such as metal salts,solvents,reaction temperature,the loading of catalyst,and reaction time on the oxidation reaction were investigated.It was found that the epoxidation products of α,β-unsaturated ketones were easily obtained with excellent yields (up to 93%) at room temperature in a short time. Especially,the heterogeneous catalyst can be reused four times without significant loss of its catalytic activity.
- MCM-41 supported Schiff base,
- potassium carbonate,
- catalytic composite,
- epoxidation of α,β-unsaturated ketones,
- hydrogen peroxide
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