370-69-4Relevant academic research and scientific papers
Fluorinated phosphorus compounds: Part 10. Bis(fluoroalkyl) S-alkyl phosphorothiolates and tris(fluoroalkyl) phosphorothionates
Timperley, Christopher M.,Kirkpatrick, Sue,Sandford, Mark,Waters, Matthew J.
, p. 902 - 906 (2005)
Treatment of bis(fluoroalkyl) phosphites (RFCH 2O)2P(O)H, where RF was CF3 or C2F5 with sulfur in pyridine at 80 °C gave salts of structure [(RFCH2O)2P(O)SH]NC5H 5 in 90 and 88% yield, respectively. The salts reacted with alkyl iodides in acetonitrile at 50 °C to furnish bis(fluoroalkyl) S-alkyl phosphorothiolates (RFCH2O)2P(O)SR, where R was Me, Et, n- and i-Pr (when RF = CF3) and Me (when R F = C2F5). Yields ranged from 21 to 57%. Bis(trifluoroethyl) S-methyl phosphorothiolate (CF3CH 2O)2P(O)SMe underwent fluorination by silver(I) fluoride in acetonitrile at room temperature to yield the phosphorofluoridate (CF 3CH2O)2P(O)F in 75% yield. Tris(fluoroalkyl) phosphorothionates (RFCH2O)3P = S, where R F was CF3, C2F5 and C 3F7, were prepared in 30-34% yield by heating the tris(fluoroalkyl) phosphites (RFCH2O)3P and sulfur to 200 °C in a sealed tube for 8 h. Crown Copyright
Silver-Catalyzed Regioselective Phosphorylation of para-Quinone Methides with P(III)-Nucleophiles
Liu, Yu,Tang, Ke-Wen,Wong, Wai-Yeung,Xie, Jun,Xiong, Biquan,Xu, Shipan,Xu, Weifeng
, p. 14983 - 15003 (2021/11/12)
A simple and efficient method for the silver-catalyzed regioselective phosphorylation of para-quinone methides (p-QMs) with P(III)-nucleophiles (P(OR)3, ArP(OR)2, Ar2P-OR) has been established via Michaelis-Arbuzov-type reaction. A broad range of P(III)-nucleophiles and para-quinone methides are well tolerated under the mild conditions, giving the expected diarylmethyl-substituted organophosphorus compounds with good to excellent yields. Moreover, a series of corresponding enantiomers can be obtained by employing dialkyl arylphosphonite (ArP(OR)2) as substrates. The control experiments and 31P NMR tracking experiments were also performed to gain insights for the plausible reaction mechanism. This protocol may have significant implications for the formation of C(sp3)-P bonds in Michaelis-Arbuzov-type reactions.
Synthesis of Non-Symmetric Functionalized Polyfluoroalkyl Phosphites
Arbuzova, S. N.,Belogorlova, N. A.,Bishimbayeva, G. K.,Chernysheva, N. A.,Gusarova, N. K.,Malysheva, S. F.,Nalibayeva, A. M.,Oparina, L. A.,Trofimov, B. A.,Verkhoturova, S. I.,Yas’ko, S. V.
, p. 839 - 844 (2020/07/03)
Abstract: Two ways for the synthesis of new representatives of non-symmetric organicphosphites with polyfluoroalkyl substituents were developed based on organicdichlorophosphites. The reaction of polyfluoroalkyl dichlorophosphites withallyl alcohol, proce
Preparation method of tri(fluoroalkyl)phosphite
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Paragraph 0023-0026, (2020/07/24)
The invention discloses a preparation method of tris(fluoroalkyl)phosphite. The preparation method comprises the following steps: 1, dropwise adding phosphorus trichloride into fluorinated fatty alcohol or fluorinated phenyl alkyl alcohol for reaction; and 2, after the reaction is finished, adding an organic solvent and deionized water, carrying out low-temperature water washing, carrying out standing and liquid separation, separating out an organic phase, rectifying the organic phase, and collecting a finished product of the tri(fluoroalkyl)phosphite. The method has the advantages that underthe condition that the yield is guaranteed, impurities in the preparation process of the tri(fluoroalkyl)phosphite can be effectively removed, and therefore a high-purity target product can be obtained through rectification.
Efficient methods for the synthesis of α-aminophosphonate fluoroalkyl esters
Skoreński, Marcin,Oleksyszyn, Józef,Sieńczyk, Marcin
supporting information, p. 1566 - 1568 (2013/03/28)
Two novel synthetic methods for the preparation of bis(trifluoroethyl) esters of α-aminophosphonic acids are presented. Preliminary results on the application of the compounds synthesized as inhibitors of serine proteases are also reported. Structures originating from α-aminoalkylphosphonate diaryl esters represent a novel class of serine protease inactivators.
Design, synthesis and in vitro evaluation of mono (2, 2, 2-trifluoroethyl) esters, mono l-amino acid ester prodrugs of acyclic nucleoside phosphonates as anti-HBV agents
Fu, Xiao Zhong,Ou, Yu,Xin, Jan,Yang, Yu She
scheme or table, p. 1387 - 1390 (2012/06/01)
A series of novel mono (2, 2, 2-trifluoroethyl) esters, mono l-amino acid ester prodrugs of acyclic nucleoside phosphonates was synthesized and their in vitro anti-HBVactivity was evaluated in HepG 2 2.2.15 cells. Compound 1d exhibited more potent anti-HB
The kinetics and mechanism of the reaction of tricoordinate phosphorus compounds with sulfenate esters
Hall, C. Dennis,Tweedy, Bruce R.,Lowther, Nicholas
, p. 341 - 358 (2007/10/03)
The kinetics and mechanism of the reaction of tricoordinate phosphorus compounds, ArnP(OCH2CF3)3-n with arylsulfenate esters, ArSOCH2CF3, are reported. Product analysis, kinetic order, activation parameters, Hammett data and solvent effects are the criteria used to elucidate the two step mechanism involving arylthiophosphoranes as intermediates.
THE THERMOLYTIC DECOMPOSITION OF ACYCLIC PHOSPHORANES
Lowther, Nicholas,Crook, Polly,Hall, C. Dennis
, p. 195 - 204 (2007/10/02)
The thermolytic decomposition of acyclic phosphoranes, ArnP(OCH2CF3)5-n in aprotic media has been shown by kinetic studies to proceed via rate-limiting ionization of the phosphoranes.Activation parameters, deuterium isotope effects, solvent effects and ρ-values (for n = 3 and n = 1) support this concept which is consistent with the observed rate-sequence of n = 3> n = 2 > n = 1 > n = 0.Key words: Phosphoranes, thermolysis, kinetics, mechanism.
Synthesis and separation of diastereoisomers of O-(2,2,2-trifluoroethyl)-3',5'-dinucleoside phosphates
Luo,Atrazheva,Fregeau,Gmeiner,Lown
, p. 1548 - 1555 (2007/10/02)
The synthesis, diastereomeric separation, and characterization are described for a series of novel O-(2,2,2-trifluoroethyl)-3',5'-dinucleoside phosphates, required for incorporation into antisense probes in the magnetic resonance imaging investigation of
DISPROPORTIONATION OF BIS(FLUOROALKYL) HYDROGEN PHOSPHITES TO TRIS(FLUOROALKYL) PHOSPHITES UNDER THE ACTION OF BASES
Mironov, V. F.,Konovalova, I. V.
, p. 1548 - 1550 (2007/10/02)
Bis(fluoroalkyl) hydrogen phosphites formed by the reaction of PCl3 with fluorinated alcohols in the presence of water undergo disproportionation under the action of triethylamine to form tris(fluoroalkyl) phosphites and triethylammonium fluoroalkyl hydrogen phosphites.The reaction mechanism is discussed.
