I am trying on doing tosylation of PEG using Tosyl Chloride with pyridine. Some articles mentioned about filtering fine particles (pyridinium salts?) after diluting with DCM. But they did it with some filter-aid like celite which I don't have access to.
On my first try, I didn't filter it and during washing (HCl, NaHCO3, brine), there seemed to be a pretty intense emulsion. I am wondering if it was caused by those particles I didn't filter.
I also tried to quench it with water instead of dcm then extract with DCM, the emulsion thing still occured.
Therefore, I would like to ask if there is any other methods of filtering those fine particles beside filter-aid. Would syringe filter work?
Thanks a lot