HCID 20386045, Verbindung → 4-[4-Acetyl-7-(1-hydroxycyclohexyl)heptyl]benzoic Acid

Reaktionsgleichung

[C:1]([CH:4]([CH2:17][C:18]#[C:19][C:20]1([OH:26])[CH2:25][CH2:24][CH2:23][CH2:22][CH2:21]1)[CH2:5][CH2:6][CH2:7][C:8]1[CH:16]=[CH:15][C:11]([C:12]([OH:14])=[O:13])=[CH:10][CH:9]=1)(=[O:3])[CH3:2].[H][H]>C(OCC)(=O)C.[Pt]>[C:1]([CH:4]([CH2:17][CH2:18][CH2:19][C:20]1([OH:26])[CH2:21][CH2:22][CH2:23][CH2:24][CH2:25]1)[CH2:5][CH2:6][CH2:7][C:8]1[CH:16]=[CH:15][C:11]([C:12]([OH:14])=[O:13])=[CH:10][CH:9]=1)(=[O:3])[CH3:2]

Komponenten

Versuchsvorschrift

4-[4-Acetyl-7-(1-hydroxycyclohexyl)-6-heptyn-1-yl]benzoic acid (5.1 g., 0.014 mole) in ethyl acetate (55 ml.) is hydrogenated over 2.0 g. of a 5% Pt on charcoal catalyst at 1 atmosphere pressure and room temperature. The theoretical amount of hydrogen (0.028 mole) is absorbed in 25 minutes. The catalyst is filtered off, the solvent is evaporated and the residue (5 g.) is chromatographed on 75 g. of silica gel with 2% methanol in chloroform as eluant. The title compound is obtained as a colorless viscous oil.