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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 863061Generated: November 1, 2026

Water → HCID 19699506, compound

https://huagongshe.com/reaction/863061

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantSodium HydroxideHCID 14798—
ReactantHCID 19699282HCID 19699282—
ReactantAluminium lithium hydrideHCID 21226445—
SolventTetrahydrofuranHCID 8028—
ProductHCID 19699506HCID 19699506102.6%

Reaction Conditions

Temperature0 °C

Reaction Steps

1,3-Difluoro-6,7,8,9-tetrahydro-5H-benzocyclohepten-7-one (1.5 g, 7.6 mmol) was dissolved in 30 mL of dry THF, the solution was cooled to 0° C. under argon and 1M LAH (7.5 mL, 7.5 mmol) in THF was added over 2 minutes. The mixture was stirred at 0° C. for 1 hour and then 0.28 mL of water, 0.28 mL of 15% aqueous sodium hydroxide and 0.9 mL of water were added sequentially. The mixture was stirred for 5 minutes, filtered, washed with ethyl acetate and dried over magnesium sulfate. Evaporation of the solvents gave 1,3-difluoro-6,7,8,9-tetrahydro-7-hydroxy-5H-benzocycloheptene (1.55 g, 7.8 mmol) as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05719280
Source datasetuspto-grants-1998_02
ORD IDord-5b9d60c946384d65bbd5464c83c7b4f3
Source noteuspto-grants-1998_02