Journal
PHOSPHORUS SULFUR AND SILICON AND THE RELATED ELEMENTS
Volume 197, Issue 5-6, Pages 529-531Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/10426507.2021.1990925
Keywords
Phosphonic acid; esterification; phosphonate; MW; ionic liquid
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Funding
- National Research, Development and Innovation Office [K134318]
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The preparation of dialkyl phenylphosphonates was evaluated through oxidation of phenyl-H-phosphinates and MW-assisted direct esterification of phenylphosphonic acid. The esterification reactions were carried out under MW irradiation in the presence of an ionic liquid as the catalyst.
The possibilities for the preparation of dialky phenylphosphonates were evaluated. On the one hand, the oxidation of phenyl-H-phosphinates gave the corresponding phenylphosphonic acid monoesters. On the other hand, phenylphosphonates may be prepared by MW-assisted direct esterification of phenylphosphonic acid. The reaction with alcohols was performed under MW irradiation in the presence of an ionic liquid as the catalyst. The second ester function was established by alkylating esterification carried out with alkyl halides in the presence of triethylamine under MW conditions.
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