Methyl iodide → 2-(3-Bromophenyl)propanenitrile

Temperatur

0 °C

To a solution of 3-bromophenylacetonitrile (12 g, 61.2 mmol) in tetrahydrofuran (150 ml) cooled down to 0° C., was added 60% sodium hydride in mineral oil (2.25 g, 56.3 mmol) portionwise over 10 minutes. The reaction mixture was stirred at 0° C. for 40 minutes. Methyl iodide (5.71 ml, 91.8 mmol) was added dropwise at 0° C. and the reaction mixture was stirred at 0° C. for a further 1 hour. The reaction mixture was diluted with ethyl acetate (250 ml), washed with water and brine. The organic phase was dried over magnesium sulfate, filtered and concentrated in vacuo. The residue was purified on silica gel by flash column chromatography (ISCO Companion, 330 g column, 0-20% EtOAc/Petrol) to afford the title compound as a colourless oil (7.06 g, 55% yield).

1. stirringthe reaction mixture was stirred at 0° C. for a further 1 hour
2. washwashed with water and brine
3. dry with materialThe organic phase was dried over magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated in vacuo
6. customThe residue was purified on silica gel by flash column chromatography (ISCO Companion, 330 g column, 0-20% EtOAc/Petrol)

ORD-Eintrag

ord-cfa1a405c4e14055adb8c88ca095e0ba

Quelldatensatz

uspto-grants-2012_05

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08173635B2