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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1156351Generated: November 3, 2026

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

https://huagongshe.com/reaction/1156351

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-piperidinecarboxylate 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 numberUS04335127
Source datasetuspto-grants-1982_06
ORD IDord-052abbf73ef946a6b8b8ae7b5de3c00b
Source noteuspto-grants-1982_06