methanol; palladium on activated charcoal Hydrogenation;

1: diethyl ether; benzene / Behandeln des Reaktionsgemisches mit Essigsaeure 2: lithium alanate; diethyl ether 3: water; hydrobromic acid 4: aqueous potassium carbonate-solution; benzene / Erwaermen des in der Benzol-Phase geloesten 1-Benzyl-4-brom-4-<2-brom-aethyl>-piperidins 5: palladium/charcoal; methanol / Hydrogenation View Scheme

1: water; hydrobromic acid 2: aqueous potassium carbonate-solution; benzene / Erwaermen des in der Benzol-Phase geloesten 1-Benzyl-4-brom-4-<2-brom-aethyl>-piperidins 3: palladium/charcoal; methanol / Hydrogenation View Scheme

1: lithium alanate; diethyl ether 2: water; hydrobromic acid 3: aqueous potassium carbonate-solution; benzene / Erwaermen des in der Benzol-Phase geloesten 1-Benzyl-4-brom-4-<2-brom-aethyl>-piperidins 4: palladium/charcoal; methanol / Hydrogenation View Scheme

1: sodium hydride; benzene / Erwaermen des Reaktionsprodukts mit wss. Salzsaeure 2: diethyl ether; benzene / Behandeln des Reaktionsgemisches mit Essigsaeure 3: lithium alanate; diethyl ether 4: water; hydrobromic acid 5: aqueous potassium carbonate-solution; benzene / Erwaermen des in der Benzol-Phase geloesten 1-Benzyl-4-brom-4-<2-brom-aethyl>-piperidins 6: palladium/charcoal; methanol / Hydrogenation View Scheme

1: aqueous potassium carbonate-solution; benzene / Erwaermen des in der Benzol-Phase geloesten 1-Benzyl-4-brom-4-<2-brom-aethyl>-piperidins 2: palladium/charcoal; methanol / Hydrogenation View Scheme

sodium in tetrahydrofuran; benzene T=20°C; stability of quinuclidin-4-yl anion; other bridgehead compounds;