Don't worry about the other 50%, Extracting the oxone is easy. Just filter then extract the whole lot together at least 3 times with DCM. Two big 5L DH2O bottles are good, just shake, settle for at least 5 min, decant the majority into the other bottle then transfer to the sep funnel for seperation. The DCM is almost clear on the 4th extract.
Combine extracts and wash once with about half the volume of DH2O to wash away any oxone remnants then evap the DCM.
If you don't filter the oxone before the reaction, the white powder will continue to percipitate with each extraction, even after post reaction filtration. SWIS7 believes that this is a result of the pH changing as the epoxide is removed. Is this correct? Anyway, don't worry about the percipitate, it will dissolve with just one wash at the end.
the 21st of the 12th 2012......