1: 69 percent 2: 75 percent / aluminium chloride / CS2 / 10 h / 80 °C 3: 93 percent / pyridine hydrochloride / 2 h / 200 °C View Scheme

Fremy’s salt; sodium acetate in chloroform; water 2.5 h; Ambient temperature;

AlCl3, aluminium chloride in dichlorobenzene, 1,2- T=20 - 25°C; 1.66667 h;

thionyl chloride; N,N-dimethyl-formamide T=20 - 50°C; 5.5 h; Cooling with ice;

1: KOH / H2O 2: K2CO3; KI / methanol 3: H(1+) 4: LiAlBH4 / tetrahydrofuran 5: pyridine 6: KOtBu / 2-methyl-propan-2-ol View Scheme

1: 95 percent / potassium carbonate / acetone / 2 h / Heating 2: 99 percent / phosphorus oxychloride, pyridine / chlorobenzene / 2 h / Heating 3: 82 percent / lithium tetramethylpiperidide, trimethyl borate / tetrahydrofuran / 2 h / -75 °C 4: 90 percent / 32percent peracetic acid / acetic acid / 2 h / Ambient temperature 5: 95 percent / potassium carbonate / acetone / 1.5 h / Heating 6: 65 percent / Zn, AcOH / H2O / 1.5 h / 70 - 75 °C 7: 70 percent / pyridine hydrochloride / 1 h / 200 - 220 °C View Scheme

1: 69 percent 2: 70 percent / perchloric acid, hydrogen / rhodium on aluminium (5percent) / ethanol / 24 °C View Scheme

carbon disulfide; aluminium trichloride

aluminium trichloride

sodium hydroxide in water Heating / reflux;