Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Isobutanol | HCID 6560 | — |
| Reactant | Triphenylphosphine | HCID 11776 | — |
| Reactant | ethyl N-ethoxycarbonyliminocarbamate | HCID 220568 | — |
| Reactant | 51991-60-7 | HCID 135744191 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 22717712 | HCID 22717712 | 85.2% |
Reaction Steps
A 50 mL round bottom flask equipped with a thermometer, a stirrer, addition funnel and nitrogen inlet was charged with 3-(phenylmethoxy)-1,2,4-oxadiazol-5(4H)-one (1 g, 5.2 mmol), 2-methyl propanol (0.45 g, 6 mmol), triphenylphosphine (1.57 g, 6 mmol) and tetrahydrofuran (5 mL). The mixture was cooled to 0° C. and a solution of diethyl azodicarboxylate (1.04 g, 6 mmol) in tetrahydrofuran (2 mL) was added dropwise over a period of 10 min. The reaction mixture was allowed to warm to room temperature, and stirred for 18 h. The entire mixture was flash chromatographed (silica gel, 8:2 hexane-ethyl acetate) to provide 1.1 g (84%) of the title compound as a white solid melting at 53-60° C.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06737383B1 |
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| Source dataset | uspto-grants-2004_05 |
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| ORD ID | ord-6dc21c0d8b05440a88d4afef33b44ac3 |
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| Source note | uspto-grants-2004_05 |
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