HuagongsheHuagongshe Chemistry Print Report · For research reference only
Tetrahydrofuran → 4-Chloro-6-(2-phenylethynyl)pyridin-2-amine
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Tetrahydrofuran | HCID 8028 | — |
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | Phenylacetylene | HCID 10821 | — |
| Reactant | 2-Amino-4,6-dichloropyridine | HCID 5316649 | — |
| Catalyst | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| Catalyst | HCID 178418476 | HCID 178418476 | — |
| Solvent | Water | HCID 962 | — |
| Solvent | Acetonitrile | HCID 6342 | — |
| Product | 4-Chloro-6-(2-phenylethynyl)pyridin-2-amine | HCID 86694368 | — |
Reaction Steps
A mixture of 4,6-dichloropyridin-2-amine (2.0 g, 12.3 mmol), ethynylbenzene (2.51 g, 24.5 mmol), copper(I) iodide (234 mg, 1.23 mmol), Dichlorobis(triphenylphosphine)-palladium(II) (1.0 g, 1.23 mmol) and triethylamine (4.3 ml, 31 mmol) is stirred under argon atmosphere in ACN (20 ml) with THF (10 ml) for 6 h at 90° C. The mixture is diluted with water and extracted with EtOAc. The combined organic layers are dried over MgSO4, concentrated in vacuo and the product purified by NP chromatography. Yield: 1.2 g (43%). HPLC-MS: M+H=229; tR=1.96 min (*Method—2).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US08859541B2 |
| Source dataset | uspto-grants-2014_10 |
| ORD ID | ord-3a1b8233b42d4edfbd30cecd61830351 |
| Source note | uspto-grants-2014_10 |