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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 427050Generated: November 1, 2026

Butyl bromide → 3-Butyl-7,8-dimethoxy-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine

https://huagongshe.com/reaction/427050

Reaction equation

Participants

RoleNameHCIDCharge
ReactantButyl bromideHCID 8002—
ReactantPotassium HydroxideHCID 14797—
Reactant1H-3-Benzazepine, 2,3,4,5-tetrahydro-7,8-dimethoxy-1-phenyl-HCID 10540963—
SolventMethanolHCID 887—
Product3-Butyl-7,8-dimethoxy-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepineHCID 20387937—

Reaction Steps

A mixture of 4.32 g. (0.0154 mole) of 7,8-dimethoxy-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine, 0.02 mole of n-butyl bromide and 0.02 mole of potassium hydroxide is dissolved in 120 ml. of dry methanol and refluxed for 48 hours. The reaction mixture is evaporated to dryness, taken up in ethyl acetate and filtered to remove inorganic salts. The filtrate is washed with water, dried and evaporated to give 3-n-butyl-7,8-dimethoxy-1-phenyl-2,3,4,5-tetrahydro-1H-3-benzazepine as an oil.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04172890
Source datasetuspto-grants-1979_10
ORD IDord-41fb4ca54e5b4cb2910ef9cc806e7204
Source noteuspto-grants-1979_10