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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 364069Generated: October 26, 2026

Acetic Acid → 1,3-Dihydro-7,8-dimethoxy-2H-3-benzazepin-2-one

https://huagongshe.com/reaction/364069

Reaction equation

Participants

RoleNameHCIDCharge
ReactantAcetic AcidHCID 176—
Reactantn-(2,2-Dimethoxyethyl)-2-(3,4-dimethoxyphenyl)acetamideHCID 13092500—
SolventHydrochloric AcidHCID 313—
Product1,3-Dihydro-7,8-dimethoxy-2H-3-benzazepin-2-oneHCID 1482373—

Reaction Steps

A solution of N-(2,2-dimethoxyethyl)-3,4-dimethoxy-phenylacetamide (600.6 g) in concentrated hydrochloric acid (3 liters) is mixed with glacial acetic acid (3 liters). After being left to stand for 17 hours at ambient temperature and mixture is poured onto ice. The crystals obtained are suction filtered, washed with water until neutral and dried.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04604389
Source datasetuspto-grants-1986_08
ORD IDord-6c570c39b0344cbfbe69dbff20377c7a
Source noteuspto-grants-1986_08