1.1: 95 percent / hydrogen / Pd/C / ethanol / 1 h / 20 °C / 2585.74 Torr 2.1: p-toluenesulfonic acid / toluene / 2 h / Heating 2.2: zinc chloride / 3 h / 20 - 70 °C View Scheme

1: 1,3,3-trimethyl-cyclohexan-1-ol With toluene-4-sulfonic acid in toluene 2 h; Heating; 2: acetic anhydride With zinc(II) chloride T=20 - 70°C; 3 h;

1: 1-(2,4,4-trimethyl-2-cyclohexen-1-yl)-ethanone With ethylmagnesium bromide; N-methylaniline in toluene T=25°C; 30 h; 2: acetaldehyde in toluene T=-5°C; 1 h; 3: With toluene-4-sulfonic acid in toluene Heating;