1: (i) OsO4, Py, benzene, (ii) aq. Na2SO3, KHCO3, MeOH 2: CrO3, AcOH / benzene View Scheme

potassium hydroxide in ethanol; water; toluene

1: (i) Mg, Et2O, (ii) /BRN= 385735/, (iii) TsOH, benzene 2: (i) OsO4, Py, benzene, (ii) aq. Na2SO3, KHCO3, MeOH 3: CrO3, AcOH / benzene View Scheme

potassium hydroxide

1: aluminium chloride; carbon disulfide 2: KOH-solution View Scheme

1: aluminium chloride; carbon disulfide 2: KOH-solution View Scheme

1: thionyl chloride 2: aluminium chloride View Scheme

aluminium trichloride

liefert je nach den Reaktionsbedingungen wechselnde Mengen;

1: PCl5 / benzene / 3 h / Ambient temperature 2: 73 percent / AlCl3 / 2 h / Ambient temperature 3: 80 percent / hydrazine hydrate, concd HCl / ethanol / 4 h / Heating 4: 37 percent / sulfuryl chloride / CH2Cl2 / 1 h / Ambient temperature 5: 35 percent / Na, diethyl malonate / benzene; ethanol / 2 h / Heating 6: 19 percent / toluene / 4 h / Heating View Scheme