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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2387979Generated: October 31, 2026

Water → 8-cyano-3,4-dihydro-1H-1-benzazepine-2,5-dione

https://huagongshe.com/reaction/2387979

Reaction equation

Participants

RoleNameHCIDCharge
ReactantWaterHCID 962—
ReactantDimethylformamideHCID 6228—
ReactantEthyl AcetateHCID 8857—
Reactant8-iodo-2,3,4,5-tetrahydro-1H-1-benzazepine-2,5-dioneHCID 58476623—
CatalystZinc cyanide (Zn(CN)2)HCID 11186—
CatalystHCID 178418397HCID 178418397—
Product8-cyano-3,4-dihydro-1H-1-benzazepine-2,5-dioneHCID 6733759570%

Reaction Conditions

Temperature80 °C

Reaction Steps

To a solution of 8-iodo-3,4-dihydro-1H-1-benzazepine-2,5-dione (0.3 g, 1.0 mmol) in DMF (5 mL) was added Zn(CN)2 (0.12 g, 1.0 mmol) and Pd(PPh3)4 (116 mg, 0.1 mmol). The reaction mixture was allowed to stir at 80° C. for 3.5 h. After being allowed to cool to rt, EtOAc (20 mL) and H2O (20 mL) were added, the organic solution was separated, and the aqueous solution was extracted with EtOAc (2×50 mL). The organic solutions were combined, washed with H2O and brine, dried over MgSO4, filtered and concentrated. The residue was purified by column chromatography to provide 8-cyano-3,4-dihydro-1H-1-benzazepine-2,5-dione (140 mg, 70%).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08268992B2
Source datasetuspto-grants-2012_09
ORD IDord-fc65746df4be47dfbf505c9d7d78b6f0
Source noteuspto-grants-2012_09