Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Benzyl Alcohol | HCID 244 | — |
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | Diphenylphosphoryl azide | HCID 123414 | — |
| Reactant | 1-Methyl (1S,2R)-4-cyclohexene-1,2-dicarboxylate | HCID 5325907 | — |
| Solvent | Toluene | HCID 1140 | — |
| Solvent | Ethyl Acetate | HCID 8857 | — |
| Product | HCID 11392118 | HCID 11392118 | 99.8% |
Reaction Steps
To a solution of (1R,6S)-6-(methoxycarbonyl)cyclohex-3-ene-1-carboxylic acid (5.0 g, 27 mmol) (from Alfa Aesar) in toluene (50.0 mL) stirring under N2 was added triethylamine (9.1 mL, 65 mmol) followed by diphenylphosphonic azide (5.85 mL, 27.1 mmol). The resulting mixture was stirred at 85° C. overnight (18 h). Benzyl alcohol (2.81 mL, 27.1 mmol) was added and the mixture heated to reflux (135° C.) and stirred overnight. After cooling, the mixture was diluted with EtOAc and then washed with sat. NaHCO3 (2×), water and brine. The organic layer was dried (Na2SO4), filtered, and concentrated. The residue was dried in vacuo to give 7.8 g of yellow oil. LCMS calculated for C16H20NO4 (M+H)+: m/z=290.1. Found: 290.0. 1H NMR (300 MHz, CDCl3) δ 7.38-7.27 (m, 5H), 5.62 (q, J=10.1 Hz, 2H), 5.39 (d, J=8.9 Hz, 1H), 5.07 (s, 2H), 4.28-4.19 (m, 1H), 3.66 (s, 3H), 2.81 (d, J=3.2 Hz, 1H), 2.56-2.12 (m, 4H) ppm.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US09181271B2 |
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| Source dataset | uspto-grants-2015_11 |
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| ORD ID | ord-688b3712b8854b94a28ab48b7d61451a |
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| Source note | uspto-grants-2015_11 |
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