Method for preparing a biphenylphosphonate compound
A method for preparing a biphenylphosphonate compound of the following formula (I): wherein n is 2 or 3; Ar is a C6-C16 aromatic group; which comprising (a) reacting an o-phenylphenol with a phosphorus trichloride in the presence of a zinc chloride catalyst to form a 6-chloro-6H-dibenz [c,e] [1,2]ox...
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Main Authors | , |
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Format | Patent |
Language | English |
Published |
01.12.2009
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Subjects | |
Online Access | Get full text |
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Summary: | A method for preparing a biphenylphosphonate compound of the following formula (I): wherein n is 2 or 3; Ar is a C6-C16 aromatic group; which comprising (a) reacting an o-phenylphenol with a phosphorus trichloride in the presence of a zinc chloride catalyst to form a 6-chloro-6H-dibenz [c,e] [1,2]oxaphosphorin of the following formula (II); (b) reacting a polyhydroxybenzene compound of the formula (III) (HO)n-Ar (III) wherein n and Ar are defined the same as the above, with the compound of formula (II) to form a compound of the following formula (IV) wherein n and Ar are defined the same as the above; and (c) oxidizing the compound of formula (IV) in the presence of water and ozone to form the compound of formula (I). |
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Bibliography: | Application Number: US20070797936 |