Process for preparing bis(hydroxymethyl) methylphosphine oxide
AssigneeAmerican Cyanamid Company
InventorJohn Harvey Bright
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Abstract
A process is provided for preparing bis(hydroxymethyl)methylphosphine oxide, comprising (1) thermally rearranging tris(hydroxymethyl)phosphine at elevated temperatures in the presence of a catalytic amount of a strong, non-oxidizing acid, having an ionization constant greater than 10.sup.-3, or a source thereof, to obtain the desired bis(hydroxymethyl)methylphosphine oxide, and (2) recovering the latter compound from the reaction mixture.
Claims10
In a process for preparing bis(hydroxymethyl)-methylphosphine oxide which comprises heating tris(hydroxymethyl)phosphine to rearrange said tris(hydroxymethyl)phosphine to bis(hydroxymethyl)methylphosphine oxide, the improvement which comprises adding a catalytic amount of a strong non-oxidizing acid, having an ionization constant greater than 10.sup.-3, or a source of a catalytic amount of said acid, thereto before heating.
Dependencies are inferred from the claim text.