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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1714147Generated: November 3, 2026

Aluminium lithium hydride → cis-3,8-Dimethyl-6-phenyl-2,3,4,4a,9,9a-hexahydro-1H-3-aza-fluorene

https://huagongshe.com/reaction/1714147

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAluminium lithium hydrideHCID 21226445—
Reactantcis-8-Methyl-6-phenyl-1,2,4,4a,9,9a-hexahydro-3-aza-fluorene-3-carboxylic acid ethyl esterHCID 86611062—
SolventTetrahydrofuranHCID 8028—
Productcis-3,8-Dimethyl-6-phenyl-2,3,4,4a,9,9a-hexahydro-1H-3-aza-fluoreneHCID 1611767960%

Reaction Conditions

Temperature20 °C

Reaction Steps

To a solution of cis-8-methyl-6-phenyl-1,2,4,4a,9,9a-hexahydro-3-aza-fluorene-3-carboxylic acid ethyl ester (20 mg, 0.060 mmol) in THF (1.0 mL) was added LiAlH4 (4.5 mg, 0.12 mmol) under Ar. The reaction mixture was stirred at 20° C. for 2 h then refluxed for 4 h. The reaction was cooled to 20° C. and quenched by addition of H2O and 1M NaOH. The quenched reaction mixture was extracted with CH2Cl2. The combined organic solution was dried over MgSO4, filtered and concentrated in vacuo. The residue was chromatographed in silica gel column (Hex/EtOAc 1/1) to obtain the title compound (10 mg, 0.036 mmol): MS (ES) 278.2 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07795436B2
Source datasetuspto-grants-2010_09
ORD IDord-296f14bedfff4f5db63800eeddc516a8
Source noteuspto-grants-2010_09