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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 239170Generated: October 29, 2026

Hydrogen Bromide → N-benzyl-5-bromohexahydro-4-azepinone

https://huagongshe.com/reaction/239170

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
ReactantBromineHCID 24408—
Reactant1-Benzyl-hexahydro-4H-azepin-4-oneHCID 1514350—
SolventAcetic AcidHCID 176—
ProductN-benzyl-5-bromohexahydro-4-azepinoneHCID 20803026—

Reaction Steps

33% hydrobromic acid in conc. acetic acid and 1.97 g bromine was added to 5 g 1-benzyl-azepane-4-one in 15 mL conc. acetic acid. The reaction was stirred 2 h at RT and completely concentrated under reduced pressure. The residue was diluted with ethyl acetate and refluxed for 1 h and crystallized with ethyl acetate to give 4 g of the desired product.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08642774B2
Source datasetuspto-grants-2014_02
ORD IDord-ad912c6a02b543b3b5f7f29869c07493
Source noteuspto-grants-2014_02