Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 924802Generated: October 31, 2026

Hydrochloric Acid → HCID 56961560, compound

https://huagongshe.com/reaction/924802

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantUreaHCID 1176—
Reactant4'-Fluoro-2-phenylacetophenoneHCID 318235—
Reactant3-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 584878—
SolventEthanolHCID 702—
ProductHCID 56961560HCID 5696156034.2%

Reaction Steps

A mixture of 1-(4-fluorophenyl)-2-phenylethanone (200 mg, 0.93 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (164 mg, 0.78 mmol), urea (140 mg, 2.3 mmol), and concentrated HCl solution (0.08 mL, 0.93 mmol) in EtOH (5 mL) was refluxed overnight. The mixture was evaporated in vacuo, and the residue was purified by preparative HPLC to give Compound 35 (120 mg, yield 29%). 1H NMR (DMSO-d6 300 MHz): δ 10.28 (s, 1H), 8.76 (s, 1H), 7.54 (s, 1H), 7.42 (s, 1H), 7.25-7.21 (m, 2H), 7.16 (s, 1H), 7.11-6.97 (m, 5H), 6.81 (d, J=7.5 Hz, 2H), 5.19 (s, 1H), 4.08-3.99 (m, 2H), 1.32 (t, J=6.6 Hz, 3H); MS (ESI): m/z 450.0 [M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09283229B2
Source datasetuspto-grants-2016_03
ORD IDord-247a517b928341c596ab9e9cd832a8db
Source noteuspto-grants-2016_03