1.1: bis-triphenylphosphine-palladium(II) chloride; triethylamine / tetrahydrofuran / 0.17 h / 20 °C 1.2: 24 h / 20 °C 2.1: potassium hexamethylsilazane / tetrahydrofuran; toluene / 1 h / -78 °C 2.2: 3 h / -78 - 0 °C 3.1: hydrogenchloride / tetrahydrofuran; water / 65 °C 4.1: tetrahydrofuran / 0.5 h / 0 °C 5.1: Grubb's 2nd generation catalyst; ethene / toluene / 2 h / 80 °C / 760.05 Torr 6.1: toluene-4-sulfonic acid / toluene / 50 °C / |Inert atmosphere View Scheme

diethyl ether Behandeln der Loesung mit verd. Schwefelsaeure;

(i), (ii) H2SO4, AcOH; Multistep reaction;

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Multistep reaction;

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propylamine in acetonitrile Irradiation;