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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

Reaction equation

Participants

RoleNameHCIDCharge
ReactantCyclooctane-1,5-dioneHCID 281640—
ReactantHCID 18767636HCID 18767636—
ReactantButyllithiumHCID 178418339—
SolventTetrahydrofuranHCID 8028—
ProductHCID 18767736HCID 18767736—

Reaction Conditions

Temperature-78 °C

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

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS06649600B1
Source datasetuspto-grants-2003_11
ORD IDord-9f722e5c22444a4784d91933bfceee47
Source noteuspto-grants-2003_11