HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 480133Generated: October 30, 2026
Cyclooctane-1,5-dione → HCID 18767736, compound
https://huagongshe.com/reaction/480133
Participants
| Role | Name | HCID | Charge |
|---|
| Reactant | Cyclooctane-1,5-dione | HCID 281640 | — |
| Reactant | HCID 18767636 | HCID 18767636 | — |
| Reactant | Butyllithium | HCID 178418339 | — |
| Solvent | Tetrahydrofuran | HCID 8028 | — |
| Product | HCID 18767736 | HCID 18767736 | — |
Reaction Steps
1,3-Dipropyl-7-pyrrolidin-1-ylmethyl-3,7-dihydro-purine-2,6-dione (638 mg) was taken in dry THF (10 ml) at −78° C. nBuLi (0.88 ml, 2.5M in hexane) was added slowly. The reaction mixture turned orange and stirred for 30 min at −78° C. Cyclooctane-1,5-dione (280 mg,) was dissolved in 3 ml of dry THF, added to the reaction mixture. Stirred at −78° C. for 30 min, slowly warmed to rt and stirred overnight. The reaction mixture was quenched with sat NH4Cl and extracted with ethyl acetate (3×50 ml). Combined organic layer was washed with 1N HCl, water, and brine. Dried over anhydrous Na2SO4 and concentrated. The crude product was purified on silica column, eluted with ethyl acetate:hexane (1:1). Mass (ES+ 377)
Provenance & Evidence
| DOI | 10.6084/m9.figshare.5104873.v1 |
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| Patent number | US06649600B1 |
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| Source dataset | uspto-grants-2003_11 |
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| ORD ID | ord-9f722e5c22444a4784d91933bfceee47 |
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| Source note | uspto-grants-2003_11 |
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