1: n-hexanethiol With sodium hydroxide in isopropyl alcohol T=60°C; 2 h; 2: isobutyl halide With sulfur; 1-(N,N-dimethylaminomethyl)-1,2,4-triazole in isopropyl alcohol T=75 - 80°C; 3 h;

tetra-n-butylammonium perchlorate; oxygen in N,N-dimethyl-formamide Ambient temperatureV -0.9 V, SCE, Hg cathode;