HCID 11547019, compound → HCID 11655477, compound

Participants

Reaction Steps

Palladium-on-charcoal (5%, 120 mg) was added to a solution of 2-[4-dimethylamino-4-(3-fluorophenyl)-cyclohexylidene]-N-[2-(1H-indol-3-yl)-ethyl]-acetamide (base of Example 25; 660 mg; 1.55 mmol) in abs. methanol (100 ml). The reaction mixture was hydrogenated at 40° C. under a pressure of 3 bar for 20 h. The catalyst was separated off over Celite and the filtrate was concentrated. After separation of the residue by chromatography on silica gel (45 g) with EA/methanol (5:1) and methanol, the less polar diastereoisomer of 2-[4-dimethylamino-4-(3-fluorophenyl)cyclohexyl]-N-[2-(1H-indol-3-yl)ethyl]acetamide was isolated in a yield of 13% (86 mg) and the more polar diastereoisomer of 2-[4-dimethylamino-4-(3-fluorophenyl)cyclohexyl]-N-[2-(1H-indol-3-yl)ethyl]acetamide was isolated in a yield of 59% (391 mg). Both amides were colourless oils and diastereomerically pure.

Provenance & Evidence