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US 5,290,935 AGranted
Preparation of 2-(pyridyl)ethyl bis-(trialkyl silyl) phosphonate derivatives
AssigneeE. I. Du Pont de Nemours and Company
InventorsDavid L. Thorn, Owen W. Webster, Robert C. Wheland
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Abstract
A process for producing phosphonate esters containing the 2-(pyridyl)ethyl group by reacting a vinylpyridine with a di- or trihydrocarbylphosphite in the presence of a selected silane, protic acid, or Lewis acid is disclosed. Also disclosed are novel silylphosphonate esters containing the 2-(pyridyl)ethyl group. All of the compounds produced herein are useful as catalysts for increasing the molecular weight of polyamides.
Claims7
A compound of the formula ##STR8## wherein each R.sup.2 is independently hydrocarbyl or substituted hydrocarbyl.
Dependencies are inferred from the claim text.