Preparation of dialkyl allylphosphonic acid diesters
AssigneeW. R. Grace & Co.-Conn.
InventorsCharles G. Carter, David R. Sterrenburg
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Abstract
An improved process for the production of allylphosphonic acid dialkyl esters in high yield and selectivity by the gradual addition of trialkyl phosphite to react with the appropriate allyl halide in the presence of a divalent nickel catalyst and, optionally, a polymerization inhibiting compound, e.g. hydroquinone.
Claims17
A process for the preparation of allylphosphonic acid dialkyl esters in improved yield and selectivity comprising reacting an allyl halide compound with a trialkyl phosphite compound in the presence of a catalytically effective amount of a divalent nickel catalyst and, optionally, a polymerization inhibiting compound, wherein the trialkyl phosphite compound is introduced into the reaction gradually over substantially the entire course of the reaction at a rate such that the molar concentration of the trialkyl phosphite is equal to or less than the molar concentration of allyl halide and the temperature is maintained within the range of about 60.degree. C. to about 150.degree. C.
Dependencies are inferred from the claim text.