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Evidence for the formation of 1,3- and 1,4-dehydrobenzenes in the thermal decomposition of diaryliodonium-carboxylates

✍ Scribed by F. Gaviña; S.V. Luis; V.S. Safont; P. Ferrer; A.M. Costero

Publisher
Elsevier Science
Year
1986
Tongue
French
Weight
206 KB
Volume
27
Category
Article
ISSN
0040-4039

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✦ Synopsis

Generation of m-and p-benzynes in decomposition of diaryliodonium-3and 4-carboxylates is demonstrated by three-phase method.

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Non concerted pathways in the generation
Non concerted pathways in the generation of dehydroarenes by thermal decomposition of diaryliodonium carboxylates.
✍ S.V. Luis; F. Gaviña; P. Ferrer; V.S. Safont; M.C. Torres; M.I. Burguette 📂 Article 📅 1989 🏛 Elsevier Science 🌐 French ⚖ 1011 KB

and 2,3\_dehydronaphthalene are generated in the thermal decomposition of appropriate diaryliodonium carboxylates as demonstrated by the use of the three phase test. Intermediate species C8H4C02 for m-and p-benzyne and ClgHgC02 for 2,3naphthalyne have been unambiguously trapped in the same way, show

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Diphenyliodonium tetrafluoroborate and diphenyliodonium hexafluorophosphate have been found to generate u p to two equivalents of hydrogen fluoride per equivalent of the iodonium salt by pyrolysis at 239°C in the neat state and at 150°C in the presence of anisole or nitrobenzene. The formation of hy

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The rearranged products in thermal decomposition of 2,5-diaryl-1,4-dithiin. Evidence for valence isomerization of 1,4-dithiin system.
✍ Keiji Kobayashi; Kiyoshi Mutai; Hayao Kobayashi 📂 Article 📅 1979 🏛 Elsevier Science 🌐 French ⚖ 246 KB

Bis(2,4-diaryl-3-thienyl) disulfide was isolated in the thermal decomposition of 2,5-diaryl-1,4-dithiin. The formation of the rearranged product as well as the kinetic data suggest strongly the valence isomerization of 2,5-diaryl-1,4-dithiin in the course of the decomposition.