The four isomers of 3, 4-diphenylcyclopentene are well resolved by chiral gas chromatography on a Cyclodex B column, eluting in the ordered sequence (3S, 4R),(3R, 4S),(3S, 4S), and (3R, 4R). Absolute stereochemical assignments were made through chemical correlations relating the 3, 4-diphenylcyclopentenes with a known reference compound,(1S, 2S)-(+)-cis-2-phenylcyclopentanol.
