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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 401016Generated: October 29, 2026

Hydrochloric Acid → HCID 56961560, compound

https://huagongshe.com/reaction/401016

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 numberUS08741915B2
Source datasetuspto-grants-2014_06
ORD IDord-ff3ef15e82dd4d59af84b24749c95419
Source noteuspto-grants-2014_06