HuagongsheHuagongshe Chemistry Print Report · For research reference only
3-Methyl-1-pentyn-3-ol → rac-(Z)-1,3-dihydro-4-(3-hydroxy-3-methyl-1-pentynyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | 3-Methyl-1-pentyn-3-ol | HCID 6494 | — |
| Reactant | (Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one | HCID 18359254 | — |
| Catalyst | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| Catalyst | HCID 178418476 | HCID 178418476 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Solvent | Triethylamine | HCID 8471 | — |
| Product | rac-(Z)-1,3-dihydro-4-(3-hydroxy-3-methyl-1-pentynyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one | HCID 59959869 | — |
Reaction Steps
Using Method D above, 3-methyl-1-pentyn-3-ol (75 mg, 0.75 mmol) (Aldrich) was coupled with (Z)-4-bromo-1,3-dihydro-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one (Starting Material 1 supra) (200 mg, 0.63 mmol) using (Ph3P)2PdCl2 (25 mg) and CuI (12 mg) as catalyst in DMF (3 mL) and Et3N (3 mL) as solvent at 70° C. for 17 h to yield rac-(Z)-1,3-dihydro-4-(3-hydroxy-3-methyl-1-pentynyl)-3-[(3-methoxy-1H-pyrrol-2-yl)methylene]-2H-indol-2-one. (Yield 66 mg, 31%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06303793B1 |
| Source dataset | uspto-grants-2001_10 |
| ORD ID | ord-58e2efeb0dd74772849f682ff0ac0821 |
| Source note | uspto-grants-2001_10 |