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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1892178Generated: October 30, 2026

Diethyl Ether → HCID 58476643, compound

https://huagongshe.com/reaction/1892178

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiethyl EtherHCID 3283—
ReactantDimethylformamide dimethyl acetalHCID 78373—
Reactant8-Chloro-3,4-dihydro-7-iodo-1H-1-benzazepine-2,5-dioneHCID 58476599—
SolventTetrahydrofuranHCID 8028—
ProductHCID 58476643HCID 5847664382%

Reaction Conditions

Temperature60 °C

Reaction Steps

To a suspension of 8-chloro-7-iodo-3,4-dihydro-1H-1-benzazepine-2,5-dione (10.0 g, 29.8 mmol) in THF (44 mL) was added DMF-DMA (21.1 mL, 149 mmol). The flask reaction mixture was allowed to stir 60° C. under an atmosphere of argon. A light orange solution containing a suspended solid resulted. After 17 h, the reaction mixture was allowed to cool to rt. Ether (100 mL) was added and the solid was collected via suction filtration, washed with ether, and dried in a vacuum oven to yield (4Z)-8-chloro-4-[(dimethylamino)methylene]-7-iodo-3,4-dihydro-1H-1-benzazepine-2,5-dione (9.50 g, 24.3 mmol, 82%) as a yellow solid. LCMS (FA): m/z=391 (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08507667B2
Source datasetuspto-grants-2013_08
ORD IDord-92014f1bc9984677b907b4893193dabd
Source noteuspto-grants-2013_08