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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1382445Generated: November 1, 2026

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

https://huagongshe.com/reaction/1382445

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 numberUS04806552
Source datasetuspto-grants-1989_02
ORD IDord-5941afa2a1a5482baf51b1649daf3f71
Source noteuspto-grants-1989_02