Just bead it! Despite the complication of enantiomeric epitaxial behavior, a derivative of phenylalanine was completely resolved (see picture). Racemization takes place by abrasively grinding crystals of the compound in a saturated solution. By studying the influence of different crystal sizes, it was found that Ostwald ripening plays an important role in this process. DBU=1,8-diazabicyclo[5.4.0]undec-7-ene.
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Kaptein et al. (2008) studied this question.
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