Chin. J. Org. Chem. ›› 2010, Vol. 30 ›› Issue (06): 843-848. Previous Articles     Next Articles

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  1. 江苏食品职业技术学院生物化工系 淮安 223003
  • 收稿日期:2009-08-04 修回日期:2009-11-27 发布日期:2010-01-15
  • 通讯作者: 刘长春

Synthesis of Carbamates by Carbonylation of Floronitrobenzenes over TiO2 Supported Pd-Fe Catalyst

LIU Chang-Chun, LU Wei-Ping, YAN Yan-Ning   

  1. Department of Biochemical Engineering, Jiangsu Food Science College, Huai′an 223003
  • Received:2009-08-04 Revised:2009-11-27 Published:2010-01-15

Carbonylation of fluoronitrobenzenes with alcohol or phenol to carbamates over TiO2 supported Pd-Fe catalyst was studied. Mediated by TiO2 supported Pd-Fe catalyst, different fluoronitrobenzenes reacted readily with alcohols or phenol and carbon monoxide to afford carbamates under room temperature and atmospheric pressure. The results show that the reaction can proceed well to carbamates in good conversion and high selectivity. Pd and Fe loading, catalyst dosage and reaction temperature affect the conversion and selectivity of carbonylation of fluoronitrobenzene over TiO2 supported Pd-Fe catalyst. The optimal reaction conditions are that fluoronitrobenzene 0.01 mol, alcohol or phenol 0.01 mol, mass fraction of Pd 0.3%, mass fraction of Fe 0.1%, catalyst dosage 52.6 mg, CH3CN 10 mL, CO 0.1 MPa, reaction temperature 20 ℃, and reaction time 3~9 h. The catalyst can be easily recovered and reused.

Key words: supported palladium-iron catalyst, carbonylation, carbamate, fluoronitrobenzene

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