A first methodical approach to salts with unsymmetrical fluorophenyl (pentafluorophenyl)difluoroiodonium(V) cations [R-f(R-F)IF2](+) (R-f=x-FC6H4, x=2, 3, 4; R-F=C6F5)

作者：Frohn Hermann Josef^*; Wenda Andre; Floerke Ulrich

来源：Tetrahedron, 2010, 66(31): 5762-5767.

DOI：10.1016/j.tet.2010.04.047

• Iodonium(V) salts
• Aryliodine(V) tetrafluorides
• Arylboron difluorides
• Fluoro-oxidizers

A promising approach to the unknown type of [Ar'(Ar)IF2]X salts is offered. x-FC6H4IF4 (x=2, 3, 4) reacts with C6F5BF2 in CH2Cl2 and forms [x-FC6H4(C6F5)IF2][BF4] salts in good yields. For [4-FC6H4(C6F5)IF2][BF4] the fluoro-oxidizer property is shown in reactions with weakly reducing agents like E(C6F5)(3) (E=P, As, Sb, Bi) and ArI (Ar=4-FC6H4, C6F5). The fluorine/aryl substitution method is also applied to the synthesis of [(4-FC6H4)(2)[F-2][BF4], an example with two identical aryl groups in the difluoroiodonium(V) moiety.

• 出版日期2010-7-31