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Updated: May 27, 2026

Preparation of Contiguous Bisaziridines for Regioselective Ring-Opening Reactions
Published on: July 28, 2022
Valine sulfonamidecinnamic acid asymmetric crystal reactions
Kraig A Wheeler1, Steven H Malehorn, Annie E Egan
1Department of Chemistry, Eastern Illinois University, Charleston Illinois, USA. kawheeler@eiu.edu
Abstract:
Racemic and homochiral valine sulfonamidecinnamic acids crystallize with components aligned by use of the complementary features of hydrogen bonds and molecular topology to give supramolecular dimers. These discrete motifs effectively organize adjacent olefins for UV initiated single-crystal-to-single-crystal [2+2] photodimerization reactions. The racemic crystals produce inversion related cyclobutane products, while the desymmetrized crystalline architectures of the homochiral phase promote asymmetric photodimerization with 90% conversion.
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