palladium 10 on activated carbon; hydrogen in methanol T=20°C; 18 h;

3,3-dimethyldioxirane in acetone T=0°C;

Benzsulfohydroxamic acid; sodium hydroxide in ethanol T=0 - 20°C; 18.5 h; Inert atmosphere;

sodium hydroxide in ethanol 2 h; Irradiation;

sodium hydroxide in methanol; water

1: sodium amalgam; disodium hydrogenphosphate / methanol / 3 h / 0 °C 2: palladium 10 on activated carbon; hydrogen / methanol / 18 h / 20 °C View Scheme

1.1: lithium hexamethyldisilazane / tetrahydrofuran / 1 h / -78 °C / Inert atmosphere 1.2: -78 °C 2.1: sodium amalgam; disodium hydrogenphosphate / methanol / 3 h / 0 °C 3.1: palladium 10 on activated carbon; hydrogen / methanol / 18 h / 20 °C View Scheme