Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | 1-Naphthaleneboronic acid | HCID 254532 | — |
| Reactant | 3-Cyclopentyl-2-(4-iodo-phenyl)-propionic acid methyl ester | HCID 67483447 | — |
| Catalyst | Tri-o-tolylphosphine | HCID 80271 | — |
| Catalyst | palladium(II) acetate | HCID 167845 | — |
| Solvent | Dimethylformamide | HCID 6228 | — |
| Product | HCID 67483520 | HCID 67483520 | 90.6% |
Reaction Steps
A solution of 3-cyclopentyl-2-(4-iodo-phenyl)-propionic acid methyl ester (3.87 g, 10.81 mmol), 1-naphthaleneboronic acid (2.79 g, 16.22 mmol), triethylamine (4.5 mL, 32.44 mmol), palladium (II) acetate (72.8 mg, 0.324 mmol), and tri-o-tolylphosphine (204.1 mg, 0.670 mmol) in dry N,N-dimethylformamide (43 mL) was heated at 100° C. under nitrogen for 1 h. The reaction mixture was allowed to cool to 25° C. and then concentrated in vacuo to remove N,N-dimethylformamide. The residue was diluted with ethyl acetate (200 mL). The organic phase was washed with a saturated aqueous sodium bicarbonate solution (1×100 mL) and water (1×100 mL), dried over sodium sulfate, filtered, and concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 70-230 mesh, 19/1 hexanes/ethyl acetate) afforded 3-cyclopentyl-2-(4-naphthalen-1-yl-phenyl)-propionic acid methyl ester (3.51 g, 90%) as a yellow oil: EI-HRMS m/e calcd for C25H26O2 (M+) 358.1933, found 358.1930.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
|---|
| Patent number | US06384220B2 |
|---|
| Source dataset | uspto-grants-2002_05 |
|---|
| ORD ID | ord-a75ff840806f4ecba3b3edf60241537a |
|---|
| Source note | uspto-grants-2002_05 |
|---|