1112-37-4Relevant articles and documents
Photochemical Rearrangement of Dialkylphosphinic Azides in Methanol and Other Protic Solvents
Harger, Martin J. P.,Stephen, Michael A.
, p. 736 - 740 (1981)
On photolysis in methanol di-t-butylphosphinic azide (4; R=But) rearranges with loss of nitrogen to give methyl NP-di-t-butylphosphonamidate (6; R=But, X=OMe) (71percent), presumably by way of a monomeric metaphosphonimidate (5; R=But) which is trapped by the solvent.Analogous rearrangements occur in other alkohols and in t-butylamine, althogh di-t-butylphosphinic amide is also a substantial product in ethanol and the major product in isopropyl alcohol.Di-isopropylphosphinic azide (4; R=Pri) behaves in a similar way, but in methanol the less hindered diethylphosphinic azide (4; R=Et) suffers extensive solvolysis to methyl diethylphosphinate.
Reactions of Benzylidene Chlorides with S-Methyl Diethylphosphinothioate
Gazizov,Valieva,Ivanova, S. Yu.,Karimova,Khairullin,Gazizova
, p. 2386 - 2389 (2019)
S-Methyl diethylphosphinothioate reacted with benzylidene chlorides to give the corresponding aryl(chloro)methyl methyl sulfide and diethylphosphinoyl chloride. The product structure suggests initial attack of the methylsulfanyl group on the CH carbon ato
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Halmann
, p. 305,307,308 (1959)
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S-Methyl diethylthiophosphinate in mono- and di(dechloromethylthioylation) of substituted benzylidene chlorides
Gazizov,Valieva,Ivanova, S. Yu.,Khairullin,Kirillina, Yu. S.,Khairullina,Ibragimov, Sh. N.
, p. 1889 - 1892 (2019)
The main route of a new reaction of (dichloromethyl)arenes with S-methyl diethylthiophosphinate is the attack of the thiol sulfur atom (P–SMe) on the methylene carbon atom. A new method for synthesizing dimethyl dithioacetals of arenecarbaldehydes without
Preparation method of dialkyl phosphinate
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Paragraph 0055; 0059-0060, (2021/04/17)
The invention discloses a preparation method of dialkyl phosphinate, which comprises the following steps: using dialkyl phosphinate and a halogenated compound as raw materials, reacting under the action of a catalyst to obtain dialkyl phosphinate; the catalyst is one or more of a phase transfer catalyst or an amphoteric compound, and comprises at least one of a cationic polyalkyl quaternary ammonium salt compound, a cationic halogenated polyalkyl quaternary ammonium salt compound, alkyl ammonium chloride, alkyl ammonium bromide, an anionic alkyl sulfate compound, alkyl sulfonate, alkylbenzene sulfonate, a nonionic surfactant and quaternary phosphonium salt. The dialkyl phosphinate is synthesized by adopting the dialkyl phosphinate and the halogenated compound as raw materials through a one-step method, and compared with an existing traditional synthesis method, the invention has the advantages that the yield is higher, byproducts are few, separation is easy, the steps are simple, consumed time is short, the process is safe and environmentally friendly, the cost is low, and implementation is easier.
