Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Ethanol | HCID 702 | — |
| Reactant | Diethyl Oxalate | HCID 7268 | — |
| Reactant | Glycine, N,N-bis(2-ethoxy-2-oxoethyl)-, ethyl ester | HCID 608668 | — |
| Reactant | Sodium | HCID 5360545 | — |
| Solvent | Acetic Acid | HCID 176 | — |
| Solvent | Water | HCID 962 | — |
| Product | HCID 57738870 | HCID 57738870 | 89% |
Reaction Steps
To a 1000-mL round bottom flask was added containing a stir bar, and argon atmosphere, and outfitted with a reflux condenser was added ethanol (200 proof, 500 mL) and sodium metal (21.31 g, 927 mmol). When the sodium was completely dissolved, a mixture of triethyl nitrilotriacetate (56.20 g, 204 mmol) and diethyl oxalate (29.44 g, 204 mmol) was added. The mixture was refluxed overnight, whereupon it became a clear, gelatinous solution. After cooling to room temperature, the mixture was poured into 1200 mL of DI water, chilled in an ice bath and acidified with glacial acetic acid (200 mL). The resulting white precipitate was isolated via vacuum filtration and washed with several portions of DI water to yield 59.75 g (89%) of a white solid. mp 121.3-121.8° C.; 1H NMR (300 MHz, CDCl3): δ 7.51 (s, 2H), 5.32 (s, 2H), 4.39 (q, 4H, J=7.7 Hz), 4.20 (q, 2H, J=7.7 Hz), 1.38 (t, 6H, J=7.7 Hz), 1.27 (t, 3H, J=7.7 Hz); 13C NMR (75 MHz, CDCl3): δ 169.5, 162.4, 139.6, 111.1, 61.6, 47.9, 14.5, 14.4; HRMS (EI): Calcd for C14H19NO8 ([M]+), 329.1111, found m/z, 329.1111; Anal. Calcd for C14H19NO8: C, 51.06; H, 5.82; N, 4.25%, found: C, 50.79; H, 5.83; N, 4.22%.
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US07799932B2 |
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| Source dataset | uspto-grants-2010_09 |
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| ORD ID | ord-16c7c62c802f4c81b5460475c5616712 |
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| Source note | uspto-grants-2010_09 |
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