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Chemistry of Heterocyclic Compounds

, Volume 9, Issue 10, pp 1195–1198 | Cite as

Fluorosulfonyl-containing heterocyclic compounds

V. Pyrolytic transformations of hexafluoroisobutenylidene sulfate
  • V. M. Pavlov
  • V. N. Derkachev
  • G. A. Sokol'skii
  • I. L. Knunyants
Article

Abstract

When hexafluoroisobutenylidene sulfate is heated above 80°C, hexafluorodimethylketene is liberated and the inner anhydride of hexafluoro-α-pyrosulfoisobutyric acid (I) is formed. On storage, anhydride I is spontaneously isomerized to hexafluoroisobutenylidene pyrosulfate, which is converted to the mixed anhydride of pentafluoromethacrylic and fluoropyrosulfonic acids on heating above 130° for many hours. On heating above 160°, I is decarboxylated to give hexafluoropropane-2,2-disulfonic acid anhydride, which is inclined to isomerize to pentafluoropropene-2-pyrosulfonyl fluoride.

Keywords

Sulfate Organic Chemistry Fluoride Anhydride Heterocyclic Compound 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

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Copyright information

© Plenum Publishing Corporation 1975

Authors and Affiliations

  • V. M. Pavlov
  • V. N. Derkachev
  • G. A. Sokol'skii
  • I. L. Knunyants

There are no affiliations available

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