HuagongsheHuagongshe Chemistry Print Report · For research reference only
2-Bromopyridine → (Z)-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-4-[(2-pyridinyl)ethynyl]-2H-indol-2-one
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 2-Bromopyridine | HCID 7973 | — |
| Reactant | (Z)-1,3-dihydro-4-ethynyl-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one | HCID 59970997 | — |
| Catalyst | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Triethylamine | HCID 8471 | — |
| Product | (Z)-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-4-[(2-pyridinyl)ethynyl]-2H-indol-2-one | HCID 9967819 | — |
Reaction Steps
Using Method J above, 2-bromopyridine (44.9 mg, 0.28 mmol) (Aldrich) was coupled with (Z)-1,3-dihydro-4-ethynyl-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (Starting Material 5) (50 mg, 0.19 mmol) using DPPFPdCl2 (7.7 mg) (Aldrich) and CuI (2 mg) (Aldrich) as catalyst in DMF (3 mL) and Et3N (3 mL) as solvent and heating at reflux for 2 days, yielding (Z)-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-4-[(2-pyridinyl)ethynyl]-2H-indol-2-one. (Yield 30 mg, 47%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06313310B1 |
| Source dataset | uspto-grants-2001_11 |
| ORD ID | ord-d15334154f9f4de69dc2f2e13367fde6 |
| Source note | uspto-grants-2001_11 |