Aryl phosphinites
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United States of America Patent
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Mar 29, 1994
Grant Date -
N/A
app pub date -
May 19, 1993
filing date -
May 21, 1992
priority date (Note) -
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Abstract
Aryl phosphinites of the formula (I) ##STR1## can be prepared in a simple manner and in high yields by reacting 2,4-di-tert.-butylphenylphosphonous dihalides with alkyl- or arylmagnesium bromides or alkyl- or arylmagnesium chlorides. Aryl phosphinites serve for the preparation of secondary phosphine oxides which are used as starting materials for the preparation of phosphine ligands in catalyst systems.
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