Removal of Triphenylphosphine Oxide by - ACS Publications

How do you remove tributylphosphine oxide?
To remove tributylphosphine and tributylphosphine oxide from the reaction mixture use polar solvents like DMF, Ethanol or DMSO.
How do you remove triphenylphosphine oxide?
If your product is stable and relatively-non polar, a good way of removing triphenylphosphine oxide is to concentrate the reaction mixture to a lower follow, suspend the residue in pentane (or hexane)/ether and filter over a silica plug.
How is TPPO removed from reaction mixtures?
We report here that TPPO is efficiently removed by precipitation in ethereal solvents (THF, 2-MeTHF, and MTBE) or toluene as a CaBr₂-TPPO complex and how this approach can be used for the direct TPPO removal from reaction mixtures without purification by column chromatography.
It is known that TPPO is almost insoluble in deionized water, cyclohexane, petroleum ether, and hexane.
TPPO can be removed with EtOH,²³ MeOH,²⁴ and isopropyl alcohol (IPA)._{1 jui. 2021}

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