N-chloro-succinimide; perchloric acid in tetrachloromethane 24 h; Ambient temperature;

1: With 2,2,6,6-tetramethyl-piperidine; n-butyllithium; ZnCl2*TMEDA; sec.-butyllithium in tetrahydrofuran; hexane; cyclohexane T=0 - 20°C; 2 h; 2: With iodine in tetrahydrofuran; hexane; cyclohexane T=20°C; Reagent/catalyst;

N,N,N-trimethylbenzenemethanaminium dichloroiodate; zinc(II) chloride in acetic acid T=70°C; 24 h; Yield given. Yields of byproduct given;

copper(II) oxide in methanol 72 h; Heating; Product distribution;