156632-30-3Relevant academic research and scientific papers
Microwave-assisted esterification of P-acids
ábrányi-Balogh, Péter,Harsági, Nikoletta,Keglevich, Gy?rgy,Kiss, Nóra Zsuzsa
, (2021/10/25)
The possibilities for the preparation of dialky phenylphosphonates were evaluated. On the one hand, the oxidation of phenyl-H-phosphinates gave the corresponding phenylphosphonic acid monoesters. On the other hand, phenylphosphonates may be prepared by MW-assisted direct esterification of phenylphosphonic acid. The reaction with alcohols was performed under MW irradiation in the presence of an ionic liquid as the catalyst. The second ester function was established by alkylating esterification carried out with alkyl halides in the presence of triethylamine under MW conditions.
Continuous flow esterification of a H-phosphinic acid, and transesterification of H-phosphinates and H-phosphonates under microwave conditions
Henyecz, Réka,Keglevich, Gy?rgy,Kiss, Nóra Zsuzsa
, (2020/02/18)
The microwave (MW)-assisted direct esterification of phenyl-H-phosphinic acid, transesterification of the alkyl phenyl-H-phosphinates so obtained, and the similar reaction of dibenzyl phosphite (DBP) were investigated in detail, and the batch accomplishme
Radical addition reactions of phosphorus hydrides: Tuning the reactivity of phosphorus hydrides, the use of microwaves and horner-wadsworth-emmons-type reactions
Jessop, Christopher M.,Parsons, Andrew F.,Routledge, Anne,Irvine, Derek J.
, p. 1547 - 1554 (2007/10/03)
The reactivity of phosphorus hydrides in radical addition reactions are compared, and the substituents on phosphorus are shown to affect the efficiency of the reactions. The change in reactivity is attributed to the different bond dissociation energies of the P-H bonds, which have been calculated. Phosphorus hydrides with particularly weak P-H bonds are shown to undergo radical additions by microwave irradiation, in the absence of conventional initiators. These radical addition reactions produce phosphonothioates, phosphinothioates and phosphane sulfides, which react in HWE-type reactions, to afford substituted alkenes. copy; Wiley-VCH Verlag GmbH & Co. KGaA, 2006.
