Reaktion #60538

Reaktionsgleichung

4-[4-methyl-2-(3,3,5,5-tetramethylcyclohexyl)phenyl]-3,6-dihydro-2H-pyridine-1-carboxylic acid t-butyl ester

trifluoroacetic acid

→

crude product

Ausbeute 124.8%

4-[4-Methyl-2-(3,3,5,5-tetramethylcyclohexyl)phenyl]-1,2,3,6-tetrahydropyridine

Ausbeute 124.8%

Lösungsmittel

dichloromethane

Reaktionsbedingungen

Aufarbeitung

1. 1
   EinengenThe reaction mixture was concentrated under reduced pressure
2. 2
   workup.ADDITIONsaturated aqueous solution of sodium hydrogencarbonate was added to the residue and extraction
3. 3
   SonstigeThe organic layer was dried with a desiccant and
4. 4
   Filtrationthen filtered
5. 5
   EinengenThe filtrate was concentrated under reduced pressure

Vorschrift

To a solution of 4-[4-methyl-2-(3,3,5,5-tetramethylcyclohexyl)phenyl]-3,6-dihydro-2H-pyridine-1-carboxylic acid t-butyl ester (297 mg, 0.72 mmol) produced in Example (104e) in dichloromethane (3 mL) was added trifluoroacetic acid (3 mL), followed by stirring for 30 minutes at room temperature. The reaction mixture was concentrated under reduced pressure, and then saturated aqueous solution of sodium hydrogencarbonate was added to the residue and extraction was performed with ethyl acetate. The organic layer was dried with a desiccant and then filtered. The filtrate was concentrated under reduced pressure to give 280 mg of a crude product of the title compound as a light yellow oil.

Quelle