2-Bromopropane → 3-Methyl-2-(2-thienyl)butanenitrile

Beteiligte Stoffe

Reaktionsschritte

2-Thienyl acetonitrile, 15 g 0.12 mol, was dissolved in tetrahydrofuran 125 ml and added dropwise to a suspension of sodium amide 4.75 g 0.12 mol in tetrahydrofuran 250 ml under ice-cooling. After stirring for 5 minutes, a solution of 2-bromopropane 11.4 ml 0.12 mol in tetrahydrofuran 125 ml was added dropwise thereto. Aqueous saturated ammonium chloride was added to the reaction mixture which was then extracted with ethyl acetate. The extract was washed with brine, dried over magnesium sulfate and evaporated. The residue was purified by silica gel column chromatography (ethyl acetate/hexane system), whereby the title compound, 5.56 g 33.6 mmol, 28.0% was obtained as a yellow oil.

Herkunft & Nachweise