1: 1-(4-methoxyphenyl)ethanone With potassium hydride in tetrahydrofuran Metallation; 0.25 h; 2: carbon disulfide With bis(trimethylsilyl)-sulfide in tetrahydrofuran Substitution; 0.333333 h; 3: With 1,2,2-trichloro-1,1,2-trichloro-ethane in tetrahydrofuran T=0°C; Oxidation; 0.5 h;
