Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Lead diacetate | HCID 9317 | — |
| Reactant | Cesium carbonate | HCID 10796 | — |
| Reactant | 2-(Dicyclohexylphosphino)biphenyl | HCID 2734216 | — |
| Reactant | HCID 24968759 | HCID 24968759 | — |
| Reactant | HCID 53802796 | HCID 53802796 | — |
| Solvent | Toluene | HCID 1140 | — |
| Solvent | Dichloromethane | HCID 6344 | — |
| Product | HCID 57487856 | HCID 57487856 | 54% |
Reaction Steps
To a suspension of 5-(R)-(4-Chloro-phenyl)-3-(4-Iodo-benzyl)-oxazolidin-2-one (50 mg, 0.12 mmol), lead acetate (3 mg, 0.012 mmol), 2-(dicyclohexyl phosphino) biphenyl (5 mg, 0.014 mmol) and cesium carbonate (118 mg, 0.36 mmol) in toluene (2.5 mL), was added 2-pyridyl methyl piperazine and the reaction flask was heated at 100° C. for 3 h. The reaction mixture was diluted with dichloromethane (6 mL), washed with water (3 mL), brine (3 mL), dried over anhydrous sodium sulfate and concentrated in vacuo. The residue was purified by chromatography on silica gel, eluting with dichloromethane containing 0.5-2% ammonia (2 M) in methanol The title compound was isolated as an off white solid (30 mg, 54%). 1H NMR (300 MHz, CDCl3): δ 8.6 (m, 1H), 7.69 (m, 1H), 7.44 (d, 1H), 7.35 (m, 2H), 7.25 (m, 5H), 6.88 (m, 2H), 5.42 (t, 1H), 4.45 (d, 1H), 4.33 (d, 1H), 3.75 (m, 3H), 3.24 (m, 5H), 2.69 (m, 4H).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US07816354B2 |
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| Source dataset | uspto-grants-2010_10 |
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| ORD ID | ord-066997456c3a4057ac5f6a6451f5c76f |
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| Source note | uspto-grants-2010_10 |
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