Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Iodide Ion | HCID 30165 | — |
| Reactant | HCID 18793489 | HCID 18793489 | — |
| Reactant | Lithium diisopropylamine | HCID 45051747 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 18793505 | HCID 18793505 | 53% |
Reaction Steps
N-(1-methylethyl)-2-propanamine lithium salt (0.0325 mol; 1 M in THF) was added dropwise and under N2 flow to intermediate 4 (0.0309 mol) in THF (70 ml), cooled to -78° C. The mixture was stirred for 30 minutes at -78° C. lodomethane iodide (0.034 mol) was added dropwise and the reaction mixture was stirred for 2 hours at RT. The mixture was quenched with a saturated aqueous NH4Cl solution, and extracted with ethylacetate. The separated organic layer was dried, filtered, and the solvent was evaporated. The residue was purified by short open column chromatography over silica gel (eluent: CH2Cl2), then by HPLC over silica gel (eluent: hexane/ethylacetate 3/2). The pure fractions were collected and the solvent, yielding 4.64 g (53%) of (±)-4-(difluoromethoxy)-alpha-methyl-3-[(tetrahydro-3-furanyl)oxy]benzeneacetonitrile (intermediate 9).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06051718 |
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| Source dataset | uspto-grants-2000_04 |
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| ORD ID | ord-f822d8e48bd240d1893071f0ad7f9de1 |
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| Source note | uspto-grants-2000_04 |
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