Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Acetic Acid | HCID 176 | — |
| Reactant | 4-Hydroxymethylpyridine | HCID 11472 | — |
| Reactant | Lithium diisopropylamide | HCID 2724682 | — |
| Reactant | HCID 86616580 | HCID 86616580 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 67387573 | HCID 67387573 | 81.8% |
Reaction Steps
To a solution of 4-pyridylcarbinol (0.44 mmol, 45 mg) and anhydrous tetrahydrofuran (3 ml) cooled at 0° C. was added LDA (2M, 0.6 mmol, 300 ul). The mixture was stirred at 0° C. for 15 minutes. A solution of 3′-Chloro-5′,6′-dicyano-2,3,5,6-tetrahydro-[1,2′]bipyrazinyl-4-carboxylic acid tert-butyl ester (0.29 mmol, 100 mg) in THF (2 ml) was then added to the cold mixture and stirred at 0° C. for 1 hour. Reaction mixture was poured onto 0.5M acetic acid and extracted with ethyl acetate. The crude product was purified by column chromatograph on silica using 70% EtOAc/hexanes to yield product 5′,6′-Dicyano-3′-(pyridin-4-ylmethoxy)-2,3,5,6-tetrahydro-[1,2′]bipyrazinyl-4-carboxylic acid tert-butyl ester (100 mg).
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US08013156B2 |
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| Source dataset | uspto-grants-2011_09 |
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| ORD ID | ord-75292c197f004ec39d8049fc9af421bd |
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| Source note | uspto-grants-2011_09 |
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