Zur addition von nucleophilen an C(2) heterocyclischer 2‐methylsubstituierter quartärsalze

Abstract

1‐(4‐Chlorophenyl)‐2‐methyl‐3‐phenylquinoxalinium perchlorate (5) obtained by two different routes, on treating with nucleophiles HX or X− yielded 1,3‐diaryl‐2‐methyl‐2X‐1,2‐dihydroquinoxalines 10. Alkylation of 10e yielded 4‐(4‐chlorophenyl)‐1,3‐dimethyl‐3‐nitromethyl‐2‐phenyl‐3,4‐dihydroquinoxalinium perchlorate (11e). The 1H‐nmr and mass spectra are presented. Diastereoisomerism of the products is discussed.