Circular dichroism of some optically active 2,3-dichloromaleimides.
Optically active derivatives of 2,3-dichloromaleimide give bisignate exciton-coupled type Cotton effects in circular dichroism spectra which can be correlated with the absolute configuration of chiral non-racemic aryl amines, aryl alpha-amino acids, and amino alcohols. The presented data indicate that these experimentally observed Cotton effects originate from the pi-->pi* electronic transition of the maleimide chromophore and that this transition is polarized perpendicularly to the symmetry axis of the maleimide chromophore.
Kaźmierczak
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Department of Chemistry, Adam Mickiewicz University, Poznań, Poland.
D000596:Amino Acids / Q000737:chemistry; D002942:Circular Dichroism; D008301:Maleimides / Q000737:chemistry*; D008968:Molecular Conformation; D019906:Nuclear Magnetic Resonance, Biomolecular; D012997:Solvents; D013056:Spectrophotometry, Ultraviolet; D013237:Stereoisomerism
D000596:Amino Acids; D008301:Maleimides; D012997:Solvents