Nevertheless, it's useful. Let's hear what our mentor-by-literature, Neal Anderson (and his book), has to say on the matter:
Reslurrying a solid can sometimes be an attractive alternative to recrystallization. Reslurrying is analogous to trituration. Since attention does not need to be paid to dissolving and recrystallizing, reslurrying is less labor-intensive than recrystallization. Reslurrying can remove impurities adsorbed to the surface of crystals, and after suitable contact with solvent the product is isolated by filtration.Typical of Anderson, he also suggests ways to avoid reslurrying altogether:
- Reslurrying can sometimes be avoided by simply changing the work-up or crystallization procedures. If reslurrying removed water-soluble impurities, including an aqueous wash during the work-up may eliminate the need to reslurry the product. Alternatively, the product may be crystallized from solvents that dissolve impurities that would otherwise be removed by reslurrying.
I'll have to try biphasic recrystallization sometime -- it sounds intriguing.
- Recrystallization from biphasic solvent combinations may be effective.