Process for preparing diaryl-pentaerythritol.

摘要

A process for preparing diaryl pentaerythritol diphosphites by reaction of phosphorous trichloride pentaerythritol and an alkyl phenol having the formula
<Chemistry id="chema01" num="0001"><Image id="ia01" he="26" wi="43" file="IMGA0001.TIF" imgContent="chem" imgFormat="TIFF" inline="no" /></Chemistry>wherein:
<UnorderedLists id="ula01" listStyle="none"><ListItem>R, is selected from the group consisting of tertiary alkyl having from about four to about eight carbon atoms and cyclohexyl; and</ListItem><ListItem>R<Sub>2</Sub> and R<Sub>3</Sub> are each selected from the group consisting of hydrogen and alkyl having from one to about eight carbon atoms; in the presence of a catalyst selected from the group consisting of amines; quaternary ammonium salts; amides of carboxylic acids, amides of oxygen acids of phosphorus; ureas; thioureas; and quaternary phosphonium salts.</ListItem></UnorderedLists>