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|Title:||Debromination of 1,4-dibromobenzene and 4,4'-dibromobiphenyl: A model for cleansing of PCBs|
|Authors:||Li, S. |
|Source:||Li, S., Ngew, H.S., Chan, S.O.H., Ng, S.C., Lee, H.K., Hor, T.S.A. (1997-02). Debromination of 1,4-dibromobenzene and 4,4'-dibromobiphenyl: A model for cleansing of PCBs. Environmental Monitoring and Assessment 44 (1-3) : 481-485. ScholarBank@NUS Repository. https://doi.org/10.1023/A:1005778000670|
|Abstract:||The aim of this study is to develop a. catalytic method which has advantages over current methods to detoxify and degrade environmentally harmful polychlorinated biphenyls (PCBs). A variety of catalysts have been employed in a preliminary study on 1,4-dibromobenzene and 4,4'-dibromobiphenyl which may be considered to represent simple analogues of PCBs. The most satisfactory catalysts are those involving (Pd(dppf)] [dppf = 1,1'-bis(diphenylphosphino)ferrocene], generated in situ from PdCl2(dppf) or Pd(dppf)2. In the presence of the reducing reagent, namely NaBH4, debromination has been achieved at relative mild conditions with high product yields (> 70%). Thus, our results indicate the possibility of dechlorination of PCBs with such catalysts.|
|Source Title:||Environmental Monitoring and Assessment|
|Appears in Collections:||Staff Publications|
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