1: Methyl N-n-butylthiocarbamate With pyridine; bis(trichloromethyl) carbonate in dichloromethane T=-10°C; 2: propargyl alcohol in dichloromethane T=-10 - 30°C; 14 h;

1: Methyl N-n-butylthiocarbamate With pyridine; bis(trichloromethyl) carbonate in dichloromethane T=-10°C; 2: tert-butyl alcohol in dichloromethane T=-10 - 30°C; 14 h;

1: Methyl N-n-butylthiocarbamate With pyridine; bis(trichloromethyl) carbonate in dichloromethane T=-10°C; 2: phenol in dichloromethane T=-10 - 30°C; 14 h;