The E2 elimination of trimethylamine from p-nitrophenethyltrimethylammonium iodide in 0.1 M NaOH is inhibited by, anionic micelles of sodium dodecyl sulfate. Cationic micelles of hexadecyltrimethylammonium bromide and zwitterionic micelles of N, N-dimethyl-N- dodecylglycine have little effect on the reaction rate. However, micelles of N, N-dimethyl-N- hexadecyl-N-(2-hydroxethy1) ammonium bromide and N, N-dimethyl-N-hexadecyl-N-(3- ...