13C nuclear magnetic resonance studies on the conformation of substituted hydantoins

Abstract

A number of hydantoins were synthesized and their ¹³C n.m.r. spectra were studied using special solvents and shift reagents. Some interesting features of their conformation were deduced. In the case of hydantoins derived from phenylalanine evidence was found for non-bonded attraction between the hydantoin ring and the phenyl group in the side chain.