The preparation of (+)-and (-)-cu-(2, 4, 5, 7-tetranitro-9-fluorenylideneaminoox~ j-propionic acid (111) by reaction of (-)-and (+)-or-(isopropylideneamino6xy)-propionic acid (I) with 2, 4, 5, 7-tetranitro-9-fluorenone(11) is described as well as the use of (+)-and (-)-I11 for partial resolution of 1-naphthyl 2-butyl ether and methyl CY-(1-anthry1)-propionate. Several complexes of I1 with polycyclic aromatic hydrocarbons are described. The melting points ...