Heterolytic Cleavage of Dihydrogen by Frustrated Lewis Pairs Derived from α-(Dimesitylphosphino)ferrocenes and B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>
作者:Dominique P. Huber、Gerald Kehr、Klaus Bergander、Roland Fröhlich、Gerhard Erker、Soichiro Tanino、Yasuhiro Ohki、Kazuyuki Tatsumi
DOI:10.1021/om800339c
日期:2008.10.27
[HB(C6F5)3−] counteranion to eventually yield the unfunctionalized [3]ferrocenophane product (10) and Mes2PH·B(C6F5)3 (11)—both characterized by independent syntheses. Analogously, Ugi’s amine (6) was converted to (1-(dimesitylphosphino)ethyl)ferrocene (7). The frustrated pair [7/8] consumes dihydrogen under similar conditions to yield the reduction products ethylferrocene (14) and Mes2PH·B(C6F5)3 (11)
Reactions of phosphines with electron deficient boranes
作者:Gregory C. Welch、Roberto Prieto、Meghan A. Dureen、Alan J. Lough、Oijsamola A. Labeodan、Thorsten Höltrichter-Rössmann、Douglas W. Stephan
DOI:10.1039/b814486a
日期:——
A series of classical B(C(6)F(5))(3)-phosphine adducts are shown to be reactive molecules. Reaction of (THF)B(C(6)F(5))(3) with phosphines are shown to effect ring-opening of THF affording the zwitterionic phosphonium-borate species of the form R(2)PH(C(4)H(8)O)B(C(6)F(5))(3) and R(3)P(C(4)H(8)O)B(C(6)F(5))(3). Alternatively, treatment of (THF)B(C(6)F(5))(3) with a lithium phosphide (R(2)PLi, R = tBu