112438-22-9Relevant academic research and scientific papers
Synthesis, Structure, and Stability of Lithium Arylphosphanidyl-diarylphosphane Oxide
Bevern, Damian,G?rls, Helmar,Krieck, Sven,Westerhausen, Matthias
, p. 948 - 958 (2020)
The reaction of LiP(H)Tipp (2a) and KP(H)Tipp (2b, Tipp = C6H2-2,4,6-iPr3), which are accessible via metalation of Tipp-PH2 (1), with bis(4-tert-butylphenyl)phosphinic chloride yields Tipp-P=P(OM)Ar2 [M = Li (3a) and K (3b)]. These complexes show characteristic chemical 31P shifts and large 1JPP coupling constants. These compounds degrade with elimination of the phosphinidene Tipp-P: and the alkali metal diarylphosphinites M–O–PAr2 [M = Li (4a) and K (4b)]. The phosphinidene forms secondary degradation products (like the meso and R,R/S,S-isomers of diphosphane Tipp-P(H)–P(H)Tipp (5) via insertion into a P–H bond of newly formed Tipp-PH2), whereas the crystallization of [Tipp-P=P(OLi)Ar2·LiOPAr2·LiCl·2Et2O]2 (i.e. [3a·4a·LiCl·2Et2O]2) succeeds from diethyl ether. The metathesis reactions of LiP(SiiPr3)Tipp and LiP(SiiPr3)Mes (Mes = C6H2-2,4,6-Me3) with Ar2P(O)Cl yield Ar*-P=P(OSiiPr3)Ar2 (Ar* = Mes, Tipp) which degrade to Ar2POSiiPr3 and other secondary products.
Electrocatalytic reduction of aryldichlorophosphines with the (2,2′-bipyridine)nickel complexes
Yakhvarov,Hey-Hawkins,Kagirov,Budnikova,Ganushevich,Sinyashin
, p. 935 - 942 (2008/09/17)
The reduction of aryldichlorophosphines in organic solvents was studied by cyclic voltammetry, preparative electrolysis, and chemical reduction. The reaction of the electrochemically generated (2,2′-bipyridine)nickel(0) complexes with aryldichlorophosphines PhPCl2 and tippPCl2 (tipp is 2,4,6-triisopropylphenyl) proceeds through the formation of highly reactive organophosphorus intermediates, whose reactions with diphenylacetylene and hex-1-ene afford phosphirene and phosphirane heterocycles, respectively.
Phosphasilene synthesis and reactivity: an improved route to 1-(2,4,6-tri-tert-butylphenyl)-2-tert-butyl-2-(2,4,6-tri-isopropylphenyl)phosphasilene
Winkel, Yvar van den,Bastiaans, Harold M. M.,Bickelhaupt, Friedrich
, p. 183 - 194 (2007/10/02)
A new route was developed for the synthesis of a specific phosphasilene, 1-(2,4,6-tri-tert-butylphenyl)-2-tert-butyl-2-(2,4,6-tri-isopropylphenyl)phosphasilene (1e).Several novel phosphasilenes (1) with various substituents on phosphorus have been synthesized.The influence of the substituents on the phosphorus and silicon chemical shifts and the stability of the phosphasilenes is analyzed.The chemical reactivity of 1e has been investigated.
Synthesis and Structures of New 1,3,2,4-Diphosphadiboretanes
Koelle, Peter,Linti, Gerald,Noeth, Heinrich,Wood, Gary L.,Narula, Chaitanya K.,Paine, Robert T.
, p. 871 - 880 (2007/10/02)
Three methods have been devised to prepare new diphosphadiboretanes: a) Base-induced hydrogen halide elimination from (amino)phosphinoboron halides precursors, b) tris(trimethylsilyl)phosphane elimination from R2N-B2 intermediates prepared in situ from combination of R2N-B(Cl)-P(SiMe3)2 and LiP(SiMe3)2, and organylphosphane elimination from aminobis(organylphosphino)boranes R2N-B(PHR')2.The molecular structures of three new 1,3,2,4-diphosphadiboretanes (3, 4a, 4c) were determined by X-ray diffractometry.These are characterized by a planar four-membered B2P2 ring with the phosphorus substituents in trans positions.Their BP bomnds represent single bond distances.Experimental results are compared with MNDO III calculations which reveal a low barrier (ΔE = 5 kcal/mol) for the dimerization of the boraphosphane H2N-B=PMe to the diphospadiboretane (H2N-BPMe)2.
