105906-36-3Relevant articles and documents
Synthesis of mixed halogenated dibenzodioxins (X = Br, Cl)
Jay,Stieglitz
, p. 987 - 991 (1997)
The conversion of dibenzodioxin with CuCl2x2H2O and CuBr2 results in polyhalogenated dibenzodioxins. Besides the chlorinated compounds, bromination stages 1 to 5 are obtained at chlorination levels of 0 to 7 for monobromo-, 0 to 7 for dibromo-, 0 to 4 for tribromo-, 0 to 3 for tetrabromo-, and 0 to 1 for pentabromodibenzodioxin. The 2,3,7,8 position is halogenated preferentially.
2-bromo-dibenzo[1,4]dioxane compound as well as preparation method and application thereof
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Paragraph 0032-0042, (2021/11/03)
The invention discloses a 2-bromo-dibenzo[1,4]dioxane compound, a preparation method and application, and relates to the technical field of organic synthesis. The preparation method comprises the following steps that 3, 4-difluorobromobenzene and catechol serve as raw materials, and under the alkaline condition, 2-bromo-dibenzo[1,4]dioxane is prepared through ring closing. The method provided by the invention adopts easily available raw materials, is efficient and safe in preparation process, is simple to operate, and is suitable for industrial production.
ORDER OF THE REPLACEMENT OF HYDROGEN BY HALOGEN IN THE HALOGENATION OF DIBENZO-p-DIOXIN AND ITS NITRO AND AMINO DERIVATIVES
Kuntsevich, A. D.,Golovkov, V. F.,Chernov, S. A.
, p. 1279 - 1286 (2007/10/02)
The order of the replacement of hydrogen by halogen in the bromination and chlorination of dibenzo-p-dioxin and its nitro and amino derivatives was examined with the purpose of determining the possibilities of the formation of highly toxic isomers of halogenated dibenzo-p-dioxins from precursors with a tricyclic structure of dibenzo-p-dioxin.A number of halogenated dibenzo-p-dioxins were synthesized, which illustrates the order of the replacement, and their physicochemical and spectral characteristics are given.
Syntheses of dibenzodioxin derivatives via iron complexes, and further functionalizations via directed metallation
Cambie, Richard C.,Janssen, Sally J.,Rutledge, Peter S.,Woodgate, Paul D.
, p. 387 - 418 (2007/10/02)
Double nucleophilic aromatic substitution reactions between (cyclopentadienyl)(η6-1,2-dichlorobenzene)iron(1 +) salts and substituted 1,2-benzenediols have been carried out under mild conditions to prepare 6-dibenzodioxin>iron(1 +) complexes functionalized in the 1- or 2-position with an alkyl, aldehyde, carboxylic acid, methoxycarbonyl, carboxamide, or hydroxy group. 3-Methyl- and 4-methyl-(η6-1,2-dichlorobenzene)iron complexes were treated with substituted 1,2-benzenediols to effect functionalization of both aromatic rings of the heterocycle.The dibenzodioxin ligands were liberated routinely by irradiation with ultraviolet light.Directed deprotonation of the free functionalized dibenzodioxins with an alkyllithium reagent followed by quenching with a variety of electrophiles yielded further derivatives, including two new isoindolone systems.