41979-47-9Relevant academic research and scientific papers
The silver(I) coordination polymer [AgO2PPh2]n and unsupported A?Ag interactions derived from aminophosphinate and phosphinic acid
Moodley, Vashen,Mthethwa, Londiwe,Pillay, Michael N.,Omondi, Bernard,Van Zyl, Werner E.
, p. 87 - 95 (2015)
Abstract The ligand N-tert-butyl-1,1-diphenylphosphinamine, Ph2P-N(H)CMe3, was prepared from tert-butylamine and diphenylchlorophosphine. The phosphine portion of the ligand became partially oxidized in air to form Ph2P(O)
Simple entry into N-tert-butyl-iminophosphonamide rare-earth metal alkyl and chlorido complexes
Rufanov, Konstantin A.,Pru?, Noa K.,Sundermeyer, J?rg
, p. 1525 - 1538 (2016)
In situ protolysis reaction of a highly basic and sterically hindered N,N′-di-tert-butyl-iminophosphonamide ligand Ph2P(N-tBu)(NH-tBu) = (NPNtBu)H (1) with equimolar or hemimolar amounts of rare-earth metal tris-alkyls leads to dialkyl [(NPNtBu)Ln(CH2SiMe3)2(THF)n] (Ln = Sc, n = 0 (2), Ln = Y, n = 1 (3)) and monoalkyl species [(NPNtBu)2Ln(CH2SiMe3)] (Ln = Y (4), Nd (6), Sm (7)). One-pot reaction of [ScCl3(THF)3]/1/MeLi in 1/2/3 eq. ratio gives [(NPNtBu)2Sc(THF)CH3] 5. Further reaction of 4 with phenylacetylene resulted in the formation of the Y-alkynyl complex [(NPNtBu)2Y(-CCPh)] 8. Alkyl abstraction in 2, 3 and 4 by reaction with [PhNMe2H]+[B(C6F5)4]- resulted in the formation of cationic alkyl complex ion-pairs [(NPNtBu)Ln(CH2SiMe3)(THF)n]+[B(C6F5)4]- (Ln = Sc (9), Y (10)) and [(NPNtBu)2Y(THF)n]+[B(C6F5)4]-11, as confirmed by NMR data. The reaction of bis-NPN alkyl complexes with CHCl3 is the simplest and most reliable protocol to synthesize bis-NPN-chlorido complexes [(NPNtBu)2Ln-Cl] (Ln = Sc (12), Y (13), Nd (14), Sm (15), Gd (16), Tb (17), Yb (18) and Lu (19)), which can become new post-metallocene alternatives to the prominent organolanthanide building blocks [Cp?2LnX]. Partial hydrolysis of 12 leads to the formation of the oxido/chlorido-capped trinuclear complex [{(NPNtBu)Sc(μ2-Cl)}3(μ3-O)(μ3-Cl)] 20. Molecular structures of 4, 6, 7, 13, 19 and 20 were confirmed by X-ray structure analyses.
Copper(I)-Catalyzed Asymmetric Synthesis of P-Chiral Aminophosphinites
Li, Yan-Bo,Tian, Hu,Xiao, Jun-Zhao,Yin, Liang,Zhang, Shuai
supporting information, (2022/02/17)
Herein, a copper(I)-catalyzed reaction of diarylphosphines and O-benzoyl hydroxylamines is developed. In the cases of symmetrical diarylphosphines, a series of aminophosphinites is prepared in high yields. In the cases of unsymmetrical diarylphosphines, an array of P-chiral aminophosphinites is synthesized in high yields with high enantioselectivity by using a copper(I)-(R,RP)-Ph-FOXAP complex as a chiral catalyst. Based on several control experiments and 31P NMR studies, a two-electron redox mechanism involving the dynamic kinetic asymmetric transformation of unsymmetrical diarylphosphines is proposed for the copper(I)-catalyzed asymmetric reaction. Finally, one representative P-chiral phosphoric amide generated through the oxidation with H2O2 is transformed to a chiral diarylphosphinate in high yield with retained enantioselectivity, which allows further transformations towards various P-chiral tertiary phosphines.
Efficient synthesis of novel N-substituted bulky diphosphinoamines
Maumela, Munaka C.,Blann, Kevin,De Bod, Henriette,Dixon, John T.,Gabrielli, William F.,Williams, D. Bradley G.
, p. 3863 - 3867 (2008/09/18)
A convenient procedure for the facile preparation of electron-rich bulky diphosphinoamines from alkylamines and chlorodiphenylphosphine has been developed. The choice of solvent proved to be critical to the successful synthesis of the diphosphinoamine (PNP) products. Georg Thieme Verlag Stuttgart.
Regio- and diastereoselective preparation of tetrahydrobenzo[c]-1-aza-2lambda(5)-phospholes through dearomatization cyclization of lithiated N-benzyl-N-alkyl(diphenyl)phosphinamides. Synthesis of gamma-(N-alkylamino)phosphinic acids.
Fernandez, Ignacio,Ortiz, Fernando Lopez,Velazquez, Amador Menendez,Granda, Santiago Garcia
, p. 3852 - 3860 (2007/10/03)
A study of the protonation of the cycloadducts derived from the dearomatization reaction of lithiated N-alkyl-N-benzyldiphenylphosphinamides has been carried out. The regio- and stereoselectivity of the process has been analyzed in terms of the size of the N-alkyl substituent, the acidity and size of the protonating reagent, and the cosolvent used. The optimization of these variables allowed the preparation of tetrahydrobenzo[c]-1-aza-2lambda(5)-phospholes containing a 1,3-cyclohexadiene or 1,4-cyclohexadiene system with moderate to excellent regio- and stereocontrol. The heterocycles were readily hydrolyzed, affording gamma-(N-alkylamino)diphenylphosphinic acids with the functionalities linked to a cyclohexadiene substructure.
Aminodiphenylphosphanes: Isotope-induced chemical shifts 1Δ14/15N(31P), coupling constants 1J(31P,15N), and chemical shifts δ15N and δ31P
Contreras, Rosalinda,Grevy, Jean Michel,Garcia-Hernandez, Zureima,Goeizado-Rodriguez, Marisol,Wrackmeyer, Bernd
, p. 542 - 550 (2007/10/03)
A series of aminodiphenylphosphanes 1 [Ph2P-N(H)tBu (a), -NEt2 (b), -NiPr2 (c)], 2 [Ph2P-NHPh (a), -NH-2-pyridine (b), -NH-3-pyridine (c), -NH-4-pyridine (d), NH-pyrimidine (e), NH-2,6-Me2-C6/su
SOME NEW PHOSPHINIC AMIDES R2P(O)NHR'
Brueck, A.,Kuchen, W.,Peters, W.
, p. 129 - 134 (2007/10/03)
P,P-Diorganylphosphinic amides R2P(O)NHR' (R = tBu, iPr, Ph; R' = Et, Pr, Cy, iPr, tBu, Ph, etc.) have been prepared by reaction of R2PCl with the corresponding lithiated amine followed by oxidation with H2O2.Th
