Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | Phenylacetylene | HCID 10821 | — |
| Reactant | 5-Bromo-2-iodopyridine | HCID 593690 | — |
| Catalyst | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| Catalyst | Dichlorobis(triphenylphosphine)palladium | HCID 6102075 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 16067786 | HCID 16067786 | 78% |
Reaction Steps
Bis-(triphenylphosphine)-palladium(II)dichloride (62 mg, 0.088 mmol, 0.05 equiv.) was dissolved in 5 ml THF. (500 mg, 1.76 mmol) 5-Bromo-2-iodopyridine and phenylacetylene (216 mg, 2.11 mmol, 1.2 equiv.) were added at room temperature. Triethylamine (0.74 ml, 5.28 mmol, 3 equiv.) and copper(I)iodide (10 mg, 0.053 mmol, 0.03 equiv.) were added and the mixture was stirred for 16 hours at 60° C. The reaction mixture was evaporated to dryness and loaded directly to a silica gel column. The crude product was purified by flash chromatography on a silica gel column eluting with a heptane:ethyl acetate gradient 100:0 to 90:10. The desired 5-bromo-2-phenylethynyl-pyridine (354 mg, 78% yield) was obtained as a light yellow solid, MS: m/e=258.0/259.9 (M+H+).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US08969338B2 |
|---|
| Source dataset | uspto-grants-2015_03 |
|---|
| ORD ID | ord-03f0ac20642649ec86cb63553f89c689 |
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| Source note | uspto-grants-2015_03 |
|---|
