Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Benzyl Alcohol | HCID 244 | — |
| Reactant | Triethylamine | HCID 8471 | — |
| Reactant | P,P-Diphenylphosphinic azide | HCID 199401 | — |
| Reactant | HCID 20039212 | HCID 20039212 | — |
| Solvent | 1,4-Dioxane | HCID 31275 | — |
| Product | HCID 19066311 | HCID 19066311 | 40% |
Reaction Steps
A mixture of 4-pyranylcarboxylic acid (2.28 gm, 20 mmol), diphenylphosphorylazide (4.31 ml, 20 mmol), triethylamine (2.78 ml, 20 mmol) in dioxane (40 ml) was heated in a 100° C. oil bath under dry nitrogen for 1 hour. Benzyl alcohol (2.7 ml, 26 mmol) was added, and heating was continued at 100° C. for 22 hours. The mixture was cooled, filtered from a white precipitate and concentrated. The residue was dissolved in 2N HCl and extracted twice with EtOAc. The extracts were washed with water, sodium bicarbonate, brine and then dried over MgSO4, and concentrated to an oil which solidified upon standing. The oil was chromatographed (30% to 60% EtOAc/Hex) to give 1.85 g of a white solid (40%).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US05789416 |
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| Source dataset | uspto-grants-1998_08 |
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| ORD ID | ord-0a409046cc1544729b8c431d33de87e7 |
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| Source note | uspto-grants-1998_08 |
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