3-(3,4-Dimethoxyphenyl)-3-(3'-nitrophenyl)acrylonitrile → 3-(3,4-Dimethoxyphenyl)-3-(3-aminophenyl)acrylonitrile

HRID 1745359Notes

Reaction equation

HRID 1745359 reaction equation
[CH3:1][O:2][C:3]1[CH:4]=[C:5]([C:11]([C:15]2[CH:20]=[CH:19][CH:18]=[C:17]([N+:21]([O-])=O)[CH:16]=2)=[CH:12][C:13]#[N:14])[CH:6]=[CH:7][C:8]=1[O:9][CH3:10].[H][H]>C(OCC)(=O)C.[Pd]>[NH2:21][C:17]1[CH:16]=[C:15]([C:11]([C:5]2[CH:6]=[CH:7][C:8]([O:9][CH3:10])=[C:3]([O:2][CH3:1])[CH:4]=2)=[CH:12][C:13]#[N:14])[CH:20]=[CH:19][CH:18]=1

Participants

5

Reactant 2

HCID 540395673-(3,4-Dimethoxyphenyl)-3-(3'-nitrophenyl)acrylonitrileHCID 178418361HCID 178418361, compound

Product 1

HCID 537858693-(3,4-Dimethoxyphenyl)-3-(3-aminophenyl)acrylonitrileYield 56%

Reagents, catalysts & solvents 2

HCID 23938PalladiumCatalystHCID 8857Ethyl AcetateSolvent

Procedure

To a solution of 3-(3,4-dimethoxyphenyl)-3-(3′-nitrophenyl)acrylonitrile (0.7 g, 2.3 mmol) in 40 mL of ethyl acetate was added 0.1 g of 10% palladium on carbon catalyst. The mixture was hydrogenated in a Parr-Shaker apparatus at 55–60 psi of hydrogen for 2.5 hours. The reaction mixture was filtered through celite and the filtrate was concentrated in vacuo to afford the crude product. The crude product was purified by flash column chromatography (silica gel, 15% ethyl acetate/methylene chloride) to afford 0.25 g (56%) of a mixture of the E and Z isomers as a yellow solid: mp 100–101° C.; 1H NMR (CDCl3) δ 7.30–6.59 (m, 14H); 5.63 (s, 1H), 5.59 (s, 1H), 3.94 (s, 3H), 3.91 (s, 3H), 3.87 (s, 3H), 3.84 (s, 3H); 13C NMR (CDCl3) δ 163.1, 162.9, 151.1, 150.5, 148.8, 148.7, 146.5, 146.4, 140.4, 138.2, 131.5, 129.5, 129.5, 129.4, 123.2, 122.1, 119.9, 119.0, 118.4, 118.2, 116.8, 116.6, 115.9, 115.0, 112.7, 111.0, 110.7, 93.3, 92.7, 56.1, 56.0, 55.9; Anal. Calcd for C17H16N2O3. Theoretical: C, 72.84; H, 5.75; N, 9.99. Found: C, 72.48; H, 6.05; N, 9.58.

Workup

  1. filtrationThe reaction mixture was filtered through celite
  2. concentrationthe filtrate was concentrated in vacuo
  3. customto afford the crude product
  4. customThe crude product was purified by flash column chromatography (silica gel, 15% ethyl acetate/methylene chloride)

Sources & evidence

ORD record
ord-8415789de3b542b29a2ac013d97533a5
Source dataset
uspto-grants-2006_03
Patent number
US07019030B2

Reaction notes

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