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- Publisher Website: 10.1016/S1381-1169(99)00051-5
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Article: Catalytic dechlorination of chlorobenzenes: Effect of solvent on efficiency and selectivity
Title | Catalytic dechlorination of chlorobenzenes: Effect of solvent on efficiency and selectivity |
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Authors | |
Keywords | Solvent Dechlorination Hydrodehalogenation Polychlorobenzenes Chlorinated benzenes Selectivity |
Issue Date | 1999 |
Citation | Journal of Molecular Catalysis A: Chemical, 1999, v. 144, n. 3, p. 397-403 How to Cite? |
Abstract | Polychlorinated benzenes were dechlorinated with NaBH4, using PdCl2(dppf) (dppf = 1,1'-bis(diphenylphosphino)ferrocene) as the catalyst. A variety of solvents, namely THF, CH3CN, DMSO, diglyme, DMF and DMA (dimethylacetamide) were examined. A supporting base, TMEDA (N,N,N,N- tetramethyl-1,2-ethylenediamine) was used in some cases. Catalytic activity was strongly solvent-dependent with DMA and DMF showing the best performance. Addition of TMEDA improved the yields in all cases, except for DMSO. In DMA, when TMEDA was used, the catalyst showed appreciable activity even after 2 weeks of reaction. Both solvent and the presence/absence of a base had a strong influence on the selectivity of the reaction. For example, the dechlorination of pentachlorobenzene led to 90% 1,2,3,4-tetrachlorobenzene in DMA/TMEDA, but to 80% 1,2,4,5-tetrachlorobenzene in DMSO/TMEDA. |
Persistent Identifier | http://hdl.handle.net/10722/219469 |
ISSN | 2018 Impact Factor: 5.008 |
ISI Accession Number ID |
DC Field | Value | Language |
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dc.contributor.author | Lassová, Luisa | - |
dc.contributor.author | Lee, Hian Kee | - |
dc.contributor.author | Hor, T. S Andy | - |
dc.date.accessioned | 2015-09-23T02:57:10Z | - |
dc.date.available | 2015-09-23T02:57:10Z | - |
dc.date.issued | 1999 | - |
dc.identifier.citation | Journal of Molecular Catalysis A: Chemical, 1999, v. 144, n. 3, p. 397-403 | - |
dc.identifier.issn | 1381-1169 | - |
dc.identifier.uri | http://hdl.handle.net/10722/219469 | - |
dc.description.abstract | Polychlorinated benzenes were dechlorinated with NaBH4, using PdCl2(dppf) (dppf = 1,1'-bis(diphenylphosphino)ferrocene) as the catalyst. A variety of solvents, namely THF, CH3CN, DMSO, diglyme, DMF and DMA (dimethylacetamide) were examined. A supporting base, TMEDA (N,N,N,N- tetramethyl-1,2-ethylenediamine) was used in some cases. Catalytic activity was strongly solvent-dependent with DMA and DMF showing the best performance. Addition of TMEDA improved the yields in all cases, except for DMSO. In DMA, when TMEDA was used, the catalyst showed appreciable activity even after 2 weeks of reaction. Both solvent and the presence/absence of a base had a strong influence on the selectivity of the reaction. For example, the dechlorination of pentachlorobenzene led to 90% 1,2,3,4-tetrachlorobenzene in DMA/TMEDA, but to 80% 1,2,4,5-tetrachlorobenzene in DMSO/TMEDA. | - |
dc.language | eng | - |
dc.relation.ispartof | Journal of Molecular Catalysis A: Chemical | - |
dc.subject | Solvent | - |
dc.subject | Dechlorination | - |
dc.subject | Hydrodehalogenation | - |
dc.subject | Polychlorobenzenes | - |
dc.subject | Chlorinated benzenes | - |
dc.subject | Selectivity | - |
dc.title | Catalytic dechlorination of chlorobenzenes: Effect of solvent on efficiency and selectivity | - |
dc.type | Article | - |
dc.description.nature | link_to_subscribed_fulltext | - |
dc.identifier.doi | 10.1016/S1381-1169(99)00051-5 | - |
dc.identifier.scopus | eid_2-s2.0-0345517975 | - |
dc.identifier.volume | 144 | - |
dc.identifier.issue | 3 | - |
dc.identifier.spage | 397 | - |
dc.identifier.epage | 403 | - |
dc.identifier.isi | WOS:000081042700003 | - |
dc.identifier.issnl | 1381-1169 | - |