SYNTHESIS OF PHOSPHITYLATED COMPOUNDS USING A QUATERNARY HETEROCYCLIC ACTIVATOR
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United States of America Patent
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Issued Date -
Oct 24, 2013
app pub date -
Jun 20, 2013
filing date -
Dec 15, 2004
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Abandoned
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Abstract
A method for preparing a phosphitylated compound comprising the step of:—reacting a hydroxyl containing compound with a phosphitylating agent in the presence of an activator having the formula (I) wherein R=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl R1, R2=either H or form a 5 to 6-membered ring together. X1, X2=independently either N or CH Y=H or Si(R4)3, with R4=alkyl, cycloalkyl, aryl, aralkyl, heteroalkyl, heteroaryl B=deprotonated acid. The hydroxyl containing compound is preferably a sugar moiety or a nucleoside or an oligomer derived therefrom.
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