1: 80 percent / SeO2 / xylene / 12 h / Heating 2: 0.4 g / NaBH4 / methanol / 0.5 h / T < 40 deg C 3: PCl5 / benzene / 4 h / Heating View Scheme

1: carbon disulfide; bromine 2: alcoholic KOH-solution View Scheme

1.1: potassium hydroxide / ethylene glycol / 2 h / Reflux; Inert atmosphere 2.1: sodium hydroxide / 5 h / Reflux; Inert atmosphere 2.2: Cooling 3.1: lithium aluminium tetrahydride / diethyl ether / 4 h / Inert atmosphere; Reflux 3.2: Saturated solution; Cooling 4.1: pyridinium chlorochromate / dichloromethane / 24 h / Inert atmosphere 5.1: palladium diacetate / diethyl ether / 4 h / 0 - 20 °C / Inert atmosphere 6.1: palladium 10 on activated carbon; hydrogen / ethanol / 6 h / 20 °C / 760.05 Torr 7.1: sodium tetrahydroborate / methanol / 4 h 7.2: Cooling 8.1: sodium hydride / tetrahydrofuran; mineral oil / 2 h / 20 °C / Inert atmosphere 8.2: 20 h / 20 °C / Inert atmosphere 9.1: 2,2'-azo-bisisobutyronitrile; tri-n-butyl-tin hydride / toluene / 4 h / Inert atmosphere; Reflux View Scheme

1,10-phenanthroline; palladium diacetate in acetonitrile T=110°C; P=1034.32 Torr; 20 h; Autoclave;

[Cu(I)(CH3CN)4]PF6 T=25°C; Pechmann condensation; 0.166667 h; neat (no solvent);

1: 1-(2-hydroxy-5-methylphenyl)ethanone With sodium methylate in anhydrous xylene T=60°C; 2 h; Inert atmosphere; 2: 2-triphenyl(α-carboxymethylene)phosphorane imidazolide in anhydrous xylene Intramolecular Wittig reaction; 48 h; RefluxInert atmosphere;

aluminum oxide; methanesulfonic acid T=20°C; Pechmann reaction; 2.45 h;

1.1: sodium hydride / tetrahydrofuran / 72 h / 0 - 20 °C / |Inert atmosphere 1.2: |Inert atmosphere 2.1: palladium diacetate; 1,10-phenanthroline / acetonitrile / 20 h / 110 °C / 1034.32 Torr / |Autoclave View Scheme

sodium acetate T=160 - 220°C;

sodium acetate T=160 - 220°C; Destillieren des Reaktionsgemisches unter vermindertem Druck und Behandeln mit Sodaloesung;