97480-49-4Relevant academic research and scientific papers
The amination of difluoro(diethoxyphosphoryl)acetyl chloride: Facile synthetic route to novel amides containing difluoromethylenephosphonate moiety
Pajkert, Romana,Milewska, Magdalena,R?schenthaler, Gerd-Volker,Koroniak, Henryk
experimental part, p. 695 - 701 (2009/12/24)
A convenient route for the synthesis of novel amides containing at least one β-keto-α,α-difluoromethylenephosphonate group has been elaborated. The procedure requires simple stirring of an amine and difluoro(diethoxyphosphoryl)acetyl chloride in THF in th
Preparation of Difluorophosphonoacetic Acid and Its Derivatives
Burton, Donald J.,Sprague, Lee G.
, p. 1523 - 1527 (2007/10/02)
The preparation of ethyl difluoro(diethoxyphosphinyl)acetate (1) has been effected by the acylation of zinc bromide with ethyl chloroformate in the presence of a catalytic amount of cuprous bromide.Similarly prepared were ethyl difluoro(diethoxyphosphinyl)pyruvate (2) and N,N-diethyldifluoro(diethoxyphosphinyl)acetamide (3).Bromotrimethylsilane selectively reacted with 1 to yield ethyl difluoroacetate (9).The remaining ethyl carboxylic ester of 9 reacted with iodotrimethylsilane to produce trimethylsilyl difluoroacetate (10), which was subsequently hydrolyzed to yield difluorophosphonoacetic acid (8).The phosphonate 9 was gently chlorinated to yield ethyl difluoro(dichlorophosphinyl)acetate (11).
