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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 248900Generated: October 25, 2026

N-(Aminocarbonyl)-2-thiophenecarboxamide → 1-[1-(Naphth-2-ylmethyl)piperid-4-yl]-3-(then-2-oyl)urea

https://huagongshe.com/reaction/248900

Reaction equation

Participants

RoleNameHCIDCharge
ReactantN-(Aminocarbonyl)-2-thiophenecarboxamideHCID 395032—
Reactant4-Amino-1-(2-naphthyl)methylpiperidineHCID 11195823—
SolventPyridineHCID 1049—
Product1-[1-(Naphth-2-ylmethyl)piperid-4-yl]-3-(then-2-oyl)ureaHCID 12942334—

Reaction Steps

4-Amino-1-(naphth-2-ylmethyl)piperidine (1.0 g, 0.0047 m) and 1-(then-2-oyl)urea (0.65 g, 0.0042 m) in pyridine (5 cm3) was refluxed for 9.5 hours. The solvent was evaporated, water added, and the precipitated title compound filtered and washed well with water. This was recrystallised from ethanol, converted to the hydrochloride salt in ethanol with ethanolic HCl, and recrystallised from ethanol, 0.5 g, at the hydrochloride, m.p. 217°-219° C.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS05212179
Source datasetuspto-grants-1993_05
ORD IDord-8da90762ae194035855781ccc1a1c76e
Source noteuspto-grants-1993_05