Dediazoniation reactions of arenediazonium ions under solvolytic conditions: fluoride anion abstraction from trifluoroethanol and α-hydrogen atom abstraction from ethanol
A Product Analytical Study of the Thermal and Photolytic Decomposition of Some Arenediazonium Salts in Solution
作者:Peter S. J. Canning、Howard Maskill、Katharine McCrudden、Brian Sexton
DOI:10.1246/bcsj.75.789
日期:2002.4
most solvents undergo unimolecular heterolysis to give singlet aryl cations which are captured by solvent. This mechanism is dominant for arenediazonium ions without electron-withdrawing substituents in all solvents, and the only reaction observed in water. Additionally, appreciable yields of fluoroarenes are obtained by fluoride abstraction by the aryl cation from fluorinated solvents and from tetrafluoroborate
Dediazoniation reactions of arenediazonium ions under solvolytic conditions: fluoride anion abstraction from trifluoroethanol and α-hydrogen atom abstraction from ethanol
作者:Peter S. J. Canning、Katharine McCrudden、Howard Maskill、Brian Sexton
DOI:10.1039/a804686g
日期:——
Arenediazonium salts decompose thermally and photochemically in trifluoroethanol to yield trifluoroethyl ethers and (in part by fluoride abstraction from the solvent) fluoroarenes; the less reactive compounds in trifluoroethanol decompose readily in ethanol to give arenes in a radical reaction involving abstraction of the α-hydrogen from the ethanol.