Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Methanol | HCID 887 | — |
| Reactant | Potassium Phosphate, Tribasic | HCID 62657 | — |
| Reactant | 4'-Bromo-4-biphenylboronic Acid (contains varying amounts of Anhydride) | HCID 3841607 | — |
| Reactant | HCID 178432842 | HCID 178432842 | — |
| Catalyst | HCID 178418397 | HCID 178418397 | — |
| Solvent | Toluene | HCID 1140 | — |
| Product | HCID 178432841 | HCID 178432841 | 43.6% |
Reaction Steps
To a solution of tert-butyl (2S,4S)-2-(5-iodo-4-methyl-1H-imidazol-2-yl)-4-methyl-pyrrolidine-1-carboxylate (289 mg, 0.7387 mmol) in 6 mL of 5:1 toluene:methanol is sequentially added [4-(4-bromophenyl)phenyl]boronic acid (346.7 mg, 1.252 mmol), K3PO4 (199.3 mg, 0.9389 mmol) and Pd(PPh3)4 (71.85 mg, 0.06218 mmol). The reaction mixture is heated at 75° C. for 3 hours. The reaction mixture is concentrated, diluted with ethyl acetate, and washed with water and brine. The organic layer is concentrated to dryness. The residue is dissolved in dichloromethane and purified by flash column chromatography on silica gel (0-10% methanol/dichloromethane) to give (2S,4S)-tert-butyl 2-(5-(4′-bromo-[1,1′-biphenyl]-4-yl)-4-methyl-1H-imidazol-2-yl)-4-methylpyrrolidine-1-carboxylate (160 mg, 0.322 mmol).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08779156B2 |
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| Source dataset | uspto-grants-2014_07 |
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| ORD ID | ord-61ba7214911b4dfaab004bce7829ec80 |
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| Source note | uspto-grants-2014_07 |
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