Reaktion #1135593

Reaktionsgleichung

(4S)-4-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-((2,2-dimethyl-1,3-dioxolan-4-yl)methyl)-3-methyl-2-oxopiperidin-1-yl)hex-2-enenitrile

hydrogen

→

title compound

(4S)-4-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-((2,2-dimethyl-1,3-dioxolan-4-yl)methyl)-3-methyl-2-oxopiperidin-1-yl)hexanenitrile

Lösungsmittel

EtOH

Reaktionsbedingungen

Aufarbeitung

1. 1
   Filtrationthe catalyst was filtered
2. 2
   Waschenwashed (EtOAc)
3. 3
   EinengenThe combined organic solutions were concentrated under reduced pressure
4. 4
   SonstigePurification by combi flash (flash column chromatography, Teledyne Isco, Lincoln, Nebr.) (SiO2, 24 g, 35% and 40% EtOAc/Hexanes)

Vorschrift

To a solution of (4S)-4-((3R,5R,6S)-5-(3-chlorophenyl)-6-(4-chlorophenyl)-3-((2,2-dimethyl-1,3-dioxolan-4-yl)methyl)-3-methyl-2-oxopiperidin-1-yl)hex-2-enenitrile prepared above in Step E (208 mg, 0.384 mmol) in EtOH (12.8 mL) was added 10% palladium on activated carbon (40.9 mg, 0.038 mmol). Then the reaction mixture was subjected to regular hydrogenation with hydrogen (0.774 mg, 0.384 mmol). After being stirred at rt for 1.5 h, the catalyst was filtered using a short plug of silica-gel and washed (EtOAc). The combined organic solutions were concentrated under reduced pressure. Purification by combi flash (flash column chromatography, Teledyne Isco, Lincoln, Nebr.) (SiO2, 24 g, 35% and 40% EtOAc/Hexanes) provided the title compound as a colorless film.

Quelle