Acrylonitrile → 3-(4-Methoxyphenyl)prop-2-enenitrile

A solution of 4-iodoanisole (1 g, 4.2 mmol), acrylonitrile (0.3 ml, 4.7 mmol), tri-o-tolylphosphine (243 mg, 0.4 mmol), palladium (II) acetate (90 mg, 0.4 mmol) and triethylamine (1.78 ml, 12 mmol) in acetonitrile (20 ml) was refluxed under nitrogen for 14 hours. The reaction mixture was diluted with EtOAc (50 ml) and washed with 2M sodium hydrogen carbonate (100 ml), the organic layer was dried over magnessium sulphate and filtered. The filtrate was evaporated in vacuo and purified by column chromatography using pentane, then 95:5 pentane:ethyl acetate, then 90:10 pentane:ethyl acetate to give the title compound (414 mg, 2.5 mmol) as a mixture of cis and trans isomers as yellow crystals, 1H NMR (CDCl3 400 MHz) δ: 3.8 (s, 3H), 5.7 (d, 1H), 6.9 (d, 1H), 7.2 (d, 1H), 7.4 (d, 2H); LRMS: m/z 176 (M+NH4+); Anal. Found C, 74.44; H, 5.66; N, 8.36. C10H39NO.0.1H2O requires C, 74.42; H, 5.65; N, 8.41%.

1. washwashed with 2M sodium hydrogen carbonate (100 ml)
2. dry with materialthe organic layer was dried over magnessium sulphate
3. filtrationfiltered
4. customThe filtrate was evaporated in vacuo
5. custompurified by column chromatography

ORD-Eintrag

ord-c1bd88a8906b45068f0e62552c375619

Quelldatensatz

uspto-grants-2005_02

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US06849649B2