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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1451333Generated: October 30, 2026

Ammonium Chloride → HCID 19047456, compound

https://huagongshe.com/reaction/1451333

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAmmonium ChlorideHCID 25517—
Reactant3-BromofuranHCID 89164—
Reactant7(4H)-Benzofuranone, 5,6-dihydro-HCID 11320959—
ReactantButyllithiumHCID 178418339—
SolventDiethyl EtherHCID 3283—
SolventTetrahydrofuranHCID 8028—
SolventHexaneHCID 8058—
ProductHCID 19047456HCID 1904745686.8%

Reaction Steps

To a solution of 10.2 ml (0.102 mol) of 10M n-butyllithium in hexane in 200 ml of ether cooled to -78° C. was added dropwise 15 g (0.102 mol) of 3-bromofuran and the mixture was stirred for 15 min. To the above cooled mixture was added 12.61 g (0.092 mol) of 4,5,6,7-tetrahydrobenzofuran-7-one in 50 ml of THF and the mixture was allowed to warm to room temperature, and then stirred for 15 min. To the mixture was added saturated ammonium chloride solution and the resulting mixture was extracted with ethyl acetate (3×100 ml), and the organic layer was washed with brine, dried over sodium sulfate and concentrated in vacuo to afford 16.3 g (86%) of 4,5,6,7-tetrahydro-7-(3-furyl)-benzofuran-7-ol, a red oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05604224
Source datasetuspto-grants-1997_02
ORD IDord-2813952d9c0d43debd753f1e5f9973a2
Source noteuspto-grants-1997_02