About: Tetrabromo-o-xylene     Goto   Sponge   NotDistinct   Permalink

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α,α,α',α'-Tetrabromo-o-xylene is an organobromine compound with the formula C6H4(CHBr2)2. Three isomers of α,α,α',α'-Tetrabromoxylene exist, but the ortho derivative is most widely studied. It is an off-white solid. The compound is prepared by the photochemical reaction of o-xylene with elemental bromine: C6H4(CH3)2 + 4 Br2 → C6H4(CHBr2)2 + 4 HBr Reaction of α,α,α',α'-tetrabromo-o-xylene with sodium iodide affords α,α'-dibromo-o-xylylene, which can be trapped with dienophiles to give naphthylene. In the absence of trapping agents, the xylylene relaxes to α,α'-dibromobenzocyclobutane:

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  • Tetrabromo-o-xylene (en)
  • 1,2-二(二溴甲基)苯 (zh)
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  • 1,2-二(二溴甲基)苯是一种有机化合物，化学式为C6H4(CHBr2)2。它的三种二溴甲基同分异构体都存在，但邻位的异构体是研究最多的。它可由邻二甲苯和溴的光化学反应制得。 C6H4(CH3)2 + 4 Br2 → C6H4(CHBr2)2 + 4 HBr 它可以和碘化钠反应，生成α,α'-二溴邻二(亚甲基)苯，在捕获剂的存在下和亲双烯体反应生成亚萘基化合物。如果没有捕获剂，则得到α,α'-二溴苯并环丁烷： C6H4(CHBr2)2 + 2 NaI → C6H4(=CHBr)2 + 2 NaBr + I2C6H4(=CHBr)2 → C6H4(CHBr)2 这些二亚甲基苯的环加成反应可以得到并苯。 (zh)
  • α,α,α',α'-Tetrabromo-o-xylene is an organobromine compound with the formula C6H4(CHBr2)2. Three isomers of α,α,α',α'-Tetrabromoxylene exist, but the ortho derivative is most widely studied. It is an off-white solid. The compound is prepared by the photochemical reaction of o-xylene with elemental bromine: C6H4(CH3)2 + 4 Br2 → C6H4(CHBr2)2 + 4 HBr Reaction of α,α,α',α'-tetrabromo-o-xylene with sodium iodide affords α,α'-dibromo-o-xylylene, which can be trapped with dienophiles to give naphthylene. In the absence of trapping agents, the xylylene relaxes to α,α'-dibromobenzocyclobutane: (en)
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  • Tetrabromo-o-xylene (en)
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  • Tetrabromo-o-xylene (en)
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  • http://commons.wikimedia.org/wiki/Special:FilePath/Tetrabromo-o-xylene.svg
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  • Tetrabromo-o-xylene.svg (en)
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  • α,α,α',α'-Tetrabromo-o-xylene is an organobromine compound with the formula C6H4(CHBr2)2. Three isomers of α,α,α',α'-Tetrabromoxylene exist, but the ortho derivative is most widely studied. It is an off-white solid. The compound is prepared by the photochemical reaction of o-xylene with elemental bromine: C6H4(CH3)2 + 4 Br2 → C6H4(CHBr2)2 + 4 HBr Reaction of α,α,α',α'-tetrabromo-o-xylene with sodium iodide affords α,α'-dibromo-o-xylylene, which can be trapped with dienophiles to give naphthylene. In the absence of trapping agents, the xylylene relaxes to α,α'-dibromobenzocyclobutane: C6H4(CHBr2)2 + 2 NaI → C6H4(=CHBr)2 + 2 NaBr + I2C6H4(=CHBr)2 → C6H4(CHBr)2 Cycloadditions of these xylylenes provides a pathway to acenes. (en)
  • 1,2-二(二溴甲基)苯是一种有机化合物，化学式为C6H4(CHBr2)2。它的三种二溴甲基同分异构体都存在，但邻位的异构体是研究最多的。它可由邻二甲苯和溴的光化学反应制得。 C6H4(CH3)2 + 4 Br2 → C6H4(CHBr2)2 + 4 HBr 它可以和碘化钠反应，生成α,α'-二溴邻二(亚甲基)苯，在捕获剂的存在下和亲双烯体反应生成亚萘基化合物。如果没有捕获剂，则得到α,α'-二溴苯并环丁烷： C6H4(CHBr2)2 + 2 NaI → C6H4(=CHBr)2 + 2 NaBr + I2C6H4(=CHBr)2 → C6H4(CHBr)2 这些二亚甲基苯的环加成反应可以得到并苯。 (zh)
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  • 1,2-Bis(dibromomethyl)benzene (en)
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