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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2177896Generated: November 2, 2026

Hydrochloric Acid → HCID 56961560, compound

https://huagongshe.com/reaction/2177896

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 numberUS09067893B2
Source datasetuspto-grants-2015_06
ORD IDord-389961bd17e54cb7af88259f88a5da92
Source noteuspto-grants-2015_06