Hydrodehalogenation of hexachloro- and hexabromobenzene by metallic calcium in ethanol, in the presence of Rh/C catalyst
2017
Katayama, Yumi | Aoyagi, Mitsuru | Matsumoto, Takuya | Harada, Hiroyuki | Simion, Alina M. | Egashira, Naoyoshi | Mitoma, Yoshiharu | Simion, Cristian
Both hexachlorobenzene and hexabromobenzene were successfully hydrodehalogenated to the monohalogenated derivative and ultimately to benzene (which was subsequently reduced to cyclohexane) using a mixture of metallic Ca, ethanol, and Rh/C, by simple stirring in diethyl ether, at room or mild temperature (60 °C). Various experiments were performed in order to assess the role of the solvent and Rh/C catalyst, as well as for elucidating the reaction pathway.
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