5 Pd(II)/C(eggshell); hydrogen in ethanol T=45°C; P=3040.2 Torr; 18 h;

1.1: n-butyllithium / tetrahydrofuran; hexane / 0 °C / Inert atmosphere 1.2: 3.83 h / -78 - 20 °C / Inert atmosphere 2.1: 5 Pd(II)/C(eggshell); hydrogen / ethanol / 18 h / 45 °C / 3040.2 Torr View Scheme

1.1: copper(I) bromide / tetrahydrofuran; 2-methyl tetrahydrofuran / 4 h / 0 - 60 °C / Inert atmosphere 1.2: 0 °C / Inert atmosphere 1.3: 1 h / Inert atmosphere; Reflux 2.1: n-butyllithium / tetrahydrofuran; hexane / 0 °C / Inert atmosphere 2.2: 3.83 h / -78 - 20 °C / Inert atmosphere 3.1: 5 Pd(II)/C(eggshell); hydrogen / ethanol / 18 h / 45 °C / 3040.2 Torr View Scheme

1: catalyst complex based on aluminum bromide / 69.84 °C 2: catalyst complex based on aluminum bromide / 69.84 °C View Scheme

1: AlCl3, aluminium chloride / -0.16 °C / Heating 2: catalyst complex based on aluminum bromide / 69.84 °C View Scheme

(i) Et2O, (ii) H2O, (iii) H2, Pd-C; Multistep reaction;

catalyst complex based on aluminum bromide T=69.84°C; Equilibrium constant;

catalyst complex based on aluminum bromide T=69.84°C; Equilibrium constant;

catalyst complex based on aluminum bromide T=69.84°C; Equilibrium constant;