title: Hydrodehalogenation of hexachloro- and hexabromobenzene by metallic calcium in ethanol, in the presence of Rh/C catalyst.
abstract: 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.
authors.affiliation: Department of Biological System Sciences, Graduate School of Comprehensive Scientific Research, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima, 727-0023, Japan.
authors.forename: Yumi
authors.initials: Y
authors.lastname: Katayama
authors.affiliation: Department of Environmental Sciences, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima, 727-0023, Japan.
authors.forename: Mitsuru
authors.initials: M
authors.lastname: Aoyagi
authors.affiliation: Department of Environmental Sciences, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima, 727-0023, Japan.
authors.forename: Takuya
authors.initials: T
authors.lastname: Matsumoto
authors.affiliation: Department of Environmental Sciences, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima, 727-0023, Japan.
authors.forename: Hiroyuki
authors.initials: H
authors.lastname: Harada
authors.affiliation: Department of Organic Chemistry, Politehnica University of Bucharest, 060042, Bucharest, Romania.
authors.forename: Alina M
authors.initials: AM
authors.lastname: Simion
authors.affiliation: Department of Environmental Sciences, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima, 727-0023, Japan.
authors.forename: Naoyoshi
authors.initials: N
authors.lastname: Egashira
authors.affiliation: Department of Environmental Sciences, Prefectural University of Hiroshima, 562 Nanatsuka-Cho, Shobara City, Hiroshima, 727-0023, Japan. mitomay@pu-hiroshima.ac.jp.
authors.forename: Yoshiharu
authors.initials: Y
authors.lastname: Mitoma
authors.affiliation: Department of Organic Chemistry, Politehnica University of Bucharest, 060042, Bucharest, Romania. c_simion@chim.upb.ro.
authors.forename: Cristian
authors.initials: C
authors.lastname: Simion
mesh_terms: D001969:Bromobenzenes / Q000737:chemistry*; D002118:Calcium / Q000737:chemistry*; D002244:Carbon / Q000737:chemistry; D002384:Catalysis; D000431:Ethanol / Q000737:chemistry*; D006581:Hexachlorobenzene / Q000737:chemistry*; D012238:Rhodium / Q000737:chemistry*; D012997:Solvents / Q000737:chemistry*; D013696:Temperature
chemical_list: D001969:Bromobenzenes; D012997:Solvents; D000431:Ethanol; D006581:Hexachlorobenzene; D002244:Carbon; D012238:Rhodium; D002118:Calcium; C017363:hexabromobenzene
keywords: Ethanol; Hexabromobenzene; Hexachlorobenzene; Hydrodehalogenation; Metallic Ca; Rh/C