Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | Trimethylsilylacetylene | HCID 66111 | — |
| Reactant | 6-Chloro-2-methoxy-3-nitropyridine | HCID 10797703 | — |
| Catalyst | Copper iodide | HCID 83717 | — |
| Catalyst | HCID 178418476 | HCID 178418476 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | HCID 89996085 | HCID 89996085 | 50.3% |
Reaction Steps
Bis(triphenylphosphine)palladiumdichloride (0.082 g, 0.118 mmol) was added to a solution of 6-chloro-2-methoxy-3-nitropyridine (0.554 g, 2.94 mmol), trimethylsilylacetylene (0.623 mL, 4.41 mmol), triethylamine (1.843 mL, 13.22 mmol) and copper iodide (0.022 g, 0.118 mmol) in DMF (10.1 mL). The reaction mixture was heated at 80° C. for 1 hour. The reaction mixture was diluted with water and the aqueous layer was extracted with EtOAc. The combined organic layers were dried over Na2SO4, filtered and concentrated in vacuo. The crude residue was purified by Biotage silica gel column chromatography eluting with cyclohexane/EtOAc (99/1) to afford the title compound as a yellow oil (370 mg, 50%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09409907B2 |
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| Source dataset | uspto-grants-2016_08 |
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| ORD ID | ord-90f0ee10ab194b7fa8cf1ada9ad437cd |
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| Source note | uspto-grants-2016_08 |
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