1: 2,4,4-trimethylcyclohex-2-en-1-one With ammonia; lithium in diethyl ether; water T=-78 - 20°C; 2: methyl iodide in diethyl ether; water; tert-butyl alcohol T=-78°C; 1 h; Reflux;

hydrogen; palladium on activated charcoal

1: CrO3, H2SO4 / acetone 2: H2 / PtO2 / methanol / 760 Torr / Ambient temperature View Scheme