762-04-9Relevant articles and documents
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Mitsunobu,O.,Mukaiyama,T.
, p. 3005 - 3006 (1964)
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Terauchi et al.
, p. 5073 (1969)
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Synthesis of Pyridiniumboranephosphonate Diesters and Related Compounds using Trityl Cation as a Borane Hydride Acceptor
Rachwalak, Marta,Go??biewska, Justyna,Jakubowski, Tomasz,Stawinski, Jacek
, p. 509 - 517 (2021)
Boranephosphonate diesters react with pyridine and some tertiary amines in the presence of dimethoxytrityl chloride used as a borane hydride acceptor, to afford the boron-modified phosphodiester analogues containing a P-B-N structural motif. The reaction provides a convenient entry to pyridinium- and ammoniumboranephosphonates derived from the corresponding alkyl, aryl, or nucleoside boranephosphonate diesters. Some aspects of the synthetic protocol, mechanistic features related to a possible intermediate involved, and the role of the solvents used, are discussed.
Electrochemical synthesis of phosphorus esters from white phosphorus in the presence of copper complexes and ethanol
Budnikom,Kafiyatullina,Sinyashin,Abdreimova
, p. 929 - 938 (2003)
In the presence of white phosphorus the redox potentials of the copper ions change and the potential of the reduction wave of CuI/Cu 0 shifts noticeably toward more positive values. The Cu I-P4 complex is characterized by a lower value of the electrochemical gap, that is, higher polarizability and reactivity compared to those of the free CuI cation. Phosphorus esters can be synthesized from P4 and ethanol. The latter is in the composition of the copper(II) complexes, which act as a catalyst-charge mediator.
Reaction of sodium N-benzylideneglycinate with dialkyl chlorophosphites in the presence of water
Dimukhametov, Mudaris N.,Mironov, Vladimir F.,Islamov, Daut R.,Litvinov, Igor A.,Gnezdilov, Oleg I.,Danilova, Yuliya V.
, p. 107 - 109 (2021/02/16)
The outcome of reaction of sodium N-benzylideneglycinate containing water in its crystal lattice with dialkyl chlorophosphites depends on the mode of addition of the latter. Upon the simultaneous mixing of the reactants, 1,4-bis[α-(dialkoxyphosphoryl)benz
Preparation method of important chemical raw material
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Paragraph 0036-0051, (2021/06/06)
The invention provides a preparation method of diethyl phosphite, which is characterized by comprising the following steps: at room temperature, adding phosphorous acid, a silver catalyst and water into a reaction container with stirring until the reactants are dissolved; then slowly dropwise adding ethanol into the reaction container, simultaneously heating the system to 50-100 DEG C, reacting for 1-4 hours, stopping stirring after the reaction is finished, standing the system; collecting an organic layer, and performing reduced pressure distillation to obtain a product. As the soluble silver salt is adopted as the catalyst, the reaction can be quickly and efficiently catalyzed in water, compared with the prior art, the reaction condition is milder, the water is adopted as the solvent to be more environment-friendly, and as water is generated in the reaction and is consistent with the reaction solvent, the content of water is increased after the reaction; therefore, the method provided by the invention is more beneficial to the rapid separation of water-insoluble diethyl phosphite from the system, so that the post-treatment is simpler and more efficient, the reaction time is saved, and the yield and purity of the product are improved.