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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1735872Generated: October 31, 2026

Water → HCID 19699506, compound

https://huagongshe.com/reaction/1735872

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 numberUS05538988
Source datasetuspto-grants-1996_07
ORD IDord-f39f4441b0234a31ac8f6bf79bd4faf8
Source noteuspto-grants-1996_07