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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1248237Generated: October 30, 2026

Hydrogen Bromide → (4-Piperidinyl)(2-thienyl)methanone hydrobromide

https://huagongshe.com/reaction/1248237

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrogen BromideHCID 260—
ReactantHCID 20278951HCID 20278951—
SolventWaterHCID 962—
Product(4-Piperidinyl)(2-thienyl)methanone hydrobromideHCID 2027897485%

Reaction Steps

A mixture of 20 parts of ethyl 4-(2-thienylcarbonyl)-1-piperidine-carboxylate and 120 parts of hydrobromic acid solution 48% in water is stirred and refluxed for 2 hours. The reaction mixture is cooled and the precipitated product is filtered off. It is washed with 2-propanol and dried, yielding 17 parts (85%) of (4-piperidinyl)(2-thienyl)methanone hydrobromide.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS04522945
Source datasetuspto-grants-1985_06
ORD IDord-b06236ed105644d48c846a5f566dbdd9
Source noteuspto-grants-1985_06