HuagongsheHuagongshe Chemistry Print Report · For research reference only
Triethylamine → 3,4-Dihydro-4,4-dimethyl-6-(trimethlsilanyl)ethynylspiro[2H-1-benzopyran-2,1'-cyclopropane]
Participants
| Role | Name | HCID | Charge |
|---|---|---|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | Trimethylsilylacetylene | HCID 66111 | — |
| Reactant | HCID 22568885 | HCID 22568885 | — |
| Catalyst | Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI) | HCID 24350 | — |
| Catalyst | HCID 178418476 | HCID 178418476 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | 3,4-Dihydro-4,4-dimethyl-6-(trimethlsilanyl)ethynylspiro[2H-1-benzopyran-2,1'-cyclopropane] | HCID 22568879 | — |
Reaction Steps
Following general procedure D and using 6-bromo-3,4-dihydro-4,4-dimethylspiro[2H-1-benzopyran-2,1′-cyclopropane] (Intermediate 36, 0.44 g, 1.65 mmol), triethyl amine (4 mL), anhydrous tetrahydrofuran (5 mL), copper(I)iodide (0.95 g, 0.5 mmol), trimethylsilyl acetylene (1.62 g, 16.5 mmol) and dichlorobis(triphenylphosphine)palladium(II) (0.4 g, 0.56 mmol), the title compound was obtained as a brown oil (0.4 g, 86%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|---|
| Patent number | US06387892B1 |
| Source dataset | uspto-grants-2002_05 |
| ORD ID | ord-b545b6fd251141b2a8b93f7cbfe67301 |
| Source note | uspto-grants-2002_05 |