Abstract
2-Methoxy-2,4-diphenyl-3(2 H )-furanone (MDPF) reacts readily with the free amino group of a dipeptide to form a pyrrolinone-type chromophore with absorption maxima at 275–285 and 370–390 nm. A simple test tube procedure is described which allows in situ correlation of the absolute configuration of the NH 2-terminal amino acid of a dipeptide with the chiroptical properties of its chromophoric derivative. In several cases, unexpected deviation of the chiroptical characteristics from previously established empirical rules is observed.
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