hydrogen; palladium on activated charcoal in benzene P=1810.02 Torr; 48 h;

1: 10 percent Spectr. / heptane; diethyl ether / 22 h / 70 °C 2: 72 percent / AlCl3 / CS2 / 5 h / 25 °C 3: 2) p-toluenesulfonic acid / 1) ether 2) benzene, reflux 4: H2 / Pd/C / benzene / 48 h / 1810.02 Torr View Scheme

1: 2) p-toluenesulfonic acid / 1) ether 2) benzene, reflux 2: H2 / Pd/C / benzene / 48 h / 1810.02 Torr View Scheme

1: 72 percent / AlCl3 / CS2 / 5 h / 25 °C 2: 2) p-toluenesulfonic acid / 1) ether 2) benzene, reflux 3: H2 / Pd/C / benzene / 48 h / 1810.02 Torr View Scheme