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Tetraethyl dimethylaminomethylenediphosphonate

Tetraethyl dimethylaminomethylenediphosphonate, 3, 277-278. The reagent can be prepared in 90% yield by reaction of the Vilsmeier reagent (from DMF and oxalyl chloride) with triethyl phosphite. [Pg.256]

WITTIG-HORNER REACTIONS Diethyl (2 tetrahydropyranyloxy)methylphosphonate. Dimethyl methylphosphonate. Tetraethyl dimethylaminomethylenediphosphonate. Vinyidiphenylphosphine oxide. WITTIG-REARRANGEMENT n-Butyllithium. [Pg.315]

Tetraethyl dimethylaminomethylenediphosphonate in anhydrous dioxane added dropwise to a suspension of NaH in the same medium, benzaldehyde added at room temp, after the initial reaction has subsided, and warmed 1 hr. at 60 -> diethyl (l-dimethylaminostyryl)phosphonate (Y 66,5%) boiled briefly with coned. HCl phenylacetic acid (Y 1A%). Overall Y AA%. F. e. s. H. Gross and B. Costi-sella, Ang. Ch. 80, 364 (1968). [Pg.473]

See other pages where Tetraethyl dimethylaminomethylenediphosphonate is mentioned: [Pg.650]    [Pg.344]    [Pg.650]    [Pg.344]   
See also in sourсe #XX -- [ Pg.502 ]



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