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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2177900Generated: October 30, 2026

Hydrochloric Acid → HCID 51348076, compound

https://huagongshe.com/reaction/2177900

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantUreaHCID 1176—
Reactant3-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 584878—
ReactantHCID 2759000HCID 2759000—
SolventEthanolHCID 702—
ProductHCID 51348076HCID 5134807648%

Reaction Steps

A mixture of 1-(3-fluoro-4-methoxyphenyl)-2-phenylethanone (100 mg, 0.41 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (72 mg, 0.34 mmol), urea (61 mg, 1.02 mmol), and concentrated HCl solution (0.03 mL, 0.34 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 39 (78 mg, yield 48%). 1H NMR (DMSO-d6 400 MHz): δ 10.28 (s, 1H), 8.71 (s, 1H), 7.53 (s, 1H), 7.42 (s, 1H), 7.17 (s, 1H), 7.10-7.01 (m, 5H), 6.95 (d, J=9.2 Hz, 1H), 6.85 (d, J=6.8 Hz, 2H), 5.18 (s, 1H), 4.08-4.01 (m, 2H), 3.79 (s, 3H), 1.33 (t, J=7.2 Hz, 3H); MS (ESI): m/z 480.0 [M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09067893B2
Source datasetuspto-grants-2015_06
ORD IDord-d7f32043bd344a87aa28eb4149c78e98
Source noteuspto-grants-2015_06