Perfluoroaryl boranes

Piers, W.E. (2005) The chemistry of Perfluoroaryl Boranes. Advances in OrganometaUic Chemistry, 52, 1—77. 

Nonetheless, several attempts to quantify Lewis acidity have been made and a few methods are useful in the context of perfluoroaryl borane chemistry. The Childs method9 involves measurement of the perturbation of the 1H NMR signal for the (3-proton... 

Jakle and co-workers have recently incorporated the PhB(C6Fs)2 framework into a polymeric matrix, giving the first perfluoroaryl borane functionalized polymers (Scheme 13).86 The Lewis acid centers in this polymer were judged to have a Childs acidity of 0.60, a comparable value to that obtained for monomeric PhB(C6F5)2. Of note in this work is that the reagent [Cu(C6F5)]4 87 was used to institute the pentafluorophenyl... 

TRIS-PERFLUOROARYL BORANE DERIVATIVES B(C6F5)3 AND RELATED COMPOUNDS... 

While structures of many polyfunctional perfluoroaryl boranes have appeared in the patent literature, the few that have actually been made and published in the open literature (Chart 2) are for the most part bifunctional. Isomeric 1,2- and l,4-(Ms-pentafluoro-phenylboryl)tetrafluorobenzene (VIII187 and IX,188 respectively) have both been prepared. The ortho isomer is prepared starting from the organomercury trimer -[Hg(C6F4)]3- 189 the dibromoboryl complex is formed upon treatment with BBr3, which... 

---