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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 3890Generated: October 26, 2026

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

https://huagongshe.com/reaction/3890

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 numberUS04722930
Source datasetuspto-grants-1988_02
ORD IDord-b9261355c50f45a3ac126c2d60770352
Source noteuspto-grants-1988_02