1.1: 45 percent / n-butyllithium / pentane; hexane / -40 - -30 °C 2.1: potassium tert-butoxide / dimethylsulfoxide / 1.5 h / 90 °C 2.2: 45 percent / H2SO4; water / 0.5 h 3.1: 0.2 g / lithium aluminum hydride / diethyl ether / 0.5 h / 20 °C 4.1: tri-n-butylphosphane / tetrahydrofuran / 1.5 h 5.1: hydrogen peroxide / CDCl3; pyridine / 0.5 h / -20 °C View Scheme

in pentane P=375.03 Torr; 5 h; HeatingIrradiation;