ChemInform Abstract: EFFECT OF MOLECULAR STRUCTURE ON OPTICAL PROPERTIES OF SULFOXIDE SYSTEMS PART 53, 6‐BROMO‐2‐NAPHTHYLSULFINYLACETIC ACIDS AND SOME OF THEIR DERIVATIVES

The crystal structure of p-nitrobenzyl ester of (+)-1,5-nitronaphthylsulfinylacetic acid

“…The Freudenberg shift rule and molar rotation changes, caused by changes of solvents, has been accepted as the criteria of configuration comparison. The results of these experiments (Janczewski and Kurys, 1983) seemed to indicate that optically active acids having the same direction of molar rotation have the same configuration, but it is to underline that the comparative experimental material was very poor. This configuration correlation was confirmed by present X-ray analysis of p-nitrobenzyl ester of (+ )-l ,5-nitronaphthylsulfinylacetic acid.…”

“…The investigations in the group of isomeric nitronaphthylsulfinylacetic acids were started with the synthesis and determination of principal stereochemical properties of optically active 1,5-nitronaphthylsulfinylacetic acids (Janczewski and Kurys, 1983). The unsubstituted optically active 1-naphthylsulfinylacetic acids, for which arbitrarily the spatial structures R( +) and S( -) previously were ascribed (Janczewski, 1961), have been assumed as a reference system having the character of configuration standard as well as standard for comparing the measured molar rotation values.…”