PHOTOSUBSTITUTION REACTIONS OF 4-METHYL-2-QUINOLINECARBONITRILE WITH ARYLALKANOIC ACIDS - NO EVIDENCE FOR THE EXTERNAL MAGNETIC-FIELD EFFECTS OR CHIRAL-SYMMETRY BREAKING

No appreciable magnetic held effects were observed on the relative qua ntum yield for photochemical reactions of 4-methyl-2-quinolinecarbonit rile with (R)-(-)-2-phenylpropionic, diphenylacetic, and 2,2-diphenylp ropionic acids in benzene. Observed results were reasonably explained in terms of kinetic parameters which are dependent on and independent of an external magnetic held. (S)-(+)- and (R)-(-)-alpha-methoxyphenyl acetic acids exhibit equivalent reactivity toward the excited state of 4-methyl-2-quinolinecarbonitrile in acetonitrile. No unusual phenomen a were observed under well controlled conditions with sufficient repet itions.