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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 542613Generated: October 28, 2026

Hydroquinone → HCID 67908432, compound

https://huagongshe.com/reaction/542613

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydroquinoneHCID 785—
ReactantCyclopentadieneHCID 7612—
Reactant5-Hydroxyfuran-2(5H)-oneHCID 21076—
SolventChloroformHCID 6212—
ProductHCID 67908432HCID 6790843261,756.5%

Reaction Conditions

Temperature20 °C

Reaction Steps

A mixture of 30 g of 5-hydroxy-2(5H)-furanone, 150 ml of chloroform, 50 mg of hydroquinone and 35 ml of freshly distilled cyclopentadiene was stirred at 20° C. under an inert atmosphere and stirred for 17 hours at 20°-45° C. The mixture was evaporated to dryness under reduced pressure and the residue was crystallized from an isopropyl ether-petroleum ether mixture to obtain 46.6 g of 3-hydroxy-tetrahydro-4,7-methano-isobenzofuran-1-one melting at ≃103° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04658043
Source datasetuspto-grants-1987_04
ORD IDord-713d9d179c834a88884167e9389b3622
Source noteuspto-grants-1987_04