Organic compounds -- part of the class 532-570 series – Organic compounds – Phosphorus containing
Patent
1996-03-25
1997-08-05
Reamer, James H.
Organic compounds -- part of the class 532-570 series
Organic compounds
Phosphorus containing
C07F 950
Patent
active
056544855
ABSTRACT:
By reacting certain partially sterically-hindered chloro-substituted cycloalkanes with sodium and/or potassium diarylphosphides in an ether reaction medium, not only are useful cycloalkyldiarylphosphines produced, but in addition the chloro-substituted cycloalkane does not undergo any appreciable reaction with the coproduced aryl sodium and/or aryl potassium as it is formed. Moreover, the process makes it possible to avoid or at least to greatly reduce interaction with or cleavage of cyclic ether reaction media such as tetrahydrofuran. Thus the process makes possible improvements both in yield and quality of the cycloalkyldiarylphosphite product. A two-stage process conducted in an ether reaction medium is also described. In the first stage the sodium and/or potassium diarylphosphine reactant is produced by reaction between sodium and/or potassium and triarylphosphine.
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Elnagar Hassan Y.
Malcolm Arcelio J.
Orihuela Felix M.
Senaratne K. Pushpananda A.
Albemarle Corporation
Pippenger Philip M.
Reamer James H.
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