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2,2′-dihalo-bis(perfluorocycloalkenes): Part 1. Synthesis by A.W. Wu; S.K. Choi; J.D. Park; R.L. Soulen is a Chemistry article available to read on EtoBox.

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An improved synthesis of l-chloro-2-iodo-perfluorocycloalkenes and their copper coupled products, 2,2'-dichloro-bis(perfluorocycloalkenes) is reported. Mixtures of equal molar quantities of different chloroiodoperfluorocycloalkenes react with copper to give predominately the mixed coupled product. For example, l-chloro-2-iodoperfluorocyclobutene and l-chloro-2iodoperfluorocyclopentene react with copper to give 2-chloro-l-Cl'-2'chlorohexafluorocyclopentenyl)]-tetrafluorocyclobutene in 70% yield. The 2,2'-dichloro-bis(perfluorocycloalkenes) react with potassium iodide in DMF to substitute one or both vinylic chlorine atoms by iodine. Copper coupling of 2,2'-diiodo-bis(perfluorocyclopentene) gives the cyclic tetramer perfluorotetracyclopentenocyclo-octatetraene, whereas 2-chloro-2'-iodo-bis(perfluorocyclopentene) and copper gives the linear tetramer 2,2"'-dichlorotetrakis(perfluorocyclopentene).

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Author

A.W. Wu; S.K. Choi; J.D. Park; R.L. Soulen

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0022-1139)

Published

1979

Language

EN

Field

Chemistry (Physical Sciences)