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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 703853Generated: October 26, 2026

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

https://huagongshe.com/reaction/703853

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 numberUS04985438
Source datasetuspto-grants-1991_01
ORD IDord-e374e0a09e0a47fea24a78939de7697b
Source noteuspto-grants-1991_01