Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Hydrochloric Acid | HCID 313 | — |
| Reactant | Malononitrile | HCID 8010 | — |
| Reactant | Sodium hydride | HCID 24758 | — |
| Reactant | 1-Iodo-4-(trifluoromethoxy)benzene | HCID 2777294 | — |
| Catalyst | HCID 178418476 | HCID 178418476 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 86665178 | HCID 86665178 | 95.9% |
Reaction Steps
To a suspension of sodium hydride (2.87 g, 114 mmol) in THF (15 mL), malononitrile (4.77 mL, 76 mmol) in 2 mL of THF was added dropwise at 0° C. After the gas evolution ceased, 1-iodo-4-(trifluoromethoxy)benzene (5.92 mL, 37.8 mmol) and bis(triphenylphosphine)palladium(II) chloride (0.797 g, 1.135 mmol) were added. This mixture was then heated at reflux under nitrogen overnight. The suspension was cooled to ambient temperature, treated with water, acidified with 1N HCl and extracted with ethyl acetate. The combined organic layers were washed with brine, dried over magnesium sulfate and filtered. The filtrate was concentrated and purified on silica gel (0˜30% ethyl acetate in hexanes) to give 8.2 g of product as a tan solid. 1H NMR (400 MHz, CDCl3) δ ppm 7.48-7.65 (m, 2H) 7.37 (d, J=8.35 Hz, 2H) 5.09 (s, 1H). MS (ESI) m/z 225.1 (M−H)−.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08609669B2 |
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| Source dataset | uspto-grants-2013_12 |
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| ORD ID | ord-5b4d2e43cf5d4d9c904ae61d58209792 |
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| Source note | uspto-grants-2013_12 |
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