title: Functionalized Pentafluoroethylphosphanes.
abstract: Bis(diethylamino)pentafluoroethylphosphane represents a versatile starting material for the synthesis of functionalized pentafluoroethylphosphanes. Perfluoroalkyl substituted aminophosphanes themselves already exhibit interesting coordination properties and were treated with the catalytically relevant salts PtCl2 and PdCl2 affording trans-[Cl2M{P(C2F5)(NEt2)2}2]. The hitherto unknown (C2F5)PBr2, accessible in good yields by treatment of C2F5P(NEt2)2 with HBr, was smoothly transformed into the corresponding phosphane, C2F5PH2, or fluoro derivative, C2F5PF2. Acidic hydrolysis of C2F5 P(NEt2)2 yielded the phosphinic acid C2F5P(O)(OH)H, the anion of which was structurally characterized. The phosphinic acid smoothly adds to the carbonyl group of acetone under P-C bond formation. An analogous reaction with aldehydes, for example, salicyl aldehyde, offers the possibility to generate stereocenters.
authors.affiliation: Fakultät für Chemie, Anorganische Chemie II, Centrum für Molekulare Materialien, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld (Germany).
authors.forename: Nadine
authors.initials: N
authors.lastname: Allefeld
authors.affiliation: Fakultät für Chemie, Anorganische Chemie II, Centrum für Molekulare Materialien, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld (Germany).
authors.forename: Beate
authors.initials: B
authors.lastname: Neumann
authors.affiliation: Fakultät für Chemie, Anorganische Chemie II, Centrum für Molekulare Materialien, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld (Germany).
authors.forename: Hans-Georg
authors.initials: HG
authors.lastname: Stammler
authors.affiliation: PM-APR-FT, Merck KGaA, Frankfurter Str. 250, 64293 Darmstadt (Germany).
authors.forename: Nikolai
authors.initials: N
authors.lastname: Ignat'ev
authors.affiliation: Fakultät für Chemie, Anorganische Chemie II, Centrum für Molekulare Materialien, Universität Bielefeld, Universitätsstrasse 25, 33615 Bielefeld (Germany). b.hoge@uni-bielefeld.de.
authors.forename: Berthold
authors.initials: B
authors.lastname: Hoge
keywords: fluorine; functionalization; phosphinic acid; phosphorus; transition metals