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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2177899Generated: October 30, 2026

Hydrochloric Acid → HCID 51348075, compound

https://huagongshe.com/reaction/2177899

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantUreaHCID 1176—
Reactant3-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 584878—
Reactant1-(3,4-dimethoxyphenyl)-2-phenylethanoneHCID 678663—
SolventEthanolHCID 702—
ProductHCID 51348075HCID 5134807535%

Reaction Steps

A mixture of 1-(3,4-dimethoxyphenyl)-2-phenylethanone (180 mg, 0.7 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (124 mg, 0.59 mmol), urea (105 mg, 1.8 mmol), and concentrated HCl solution (0.05 mL, 0.59 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 38 (100 mg, yield 35%) as a yellow solid. 1H NMR (CD3OD 400 MHz): δ 7.63 (d, J=1.2 Hz, 1H), 7.19 (s, 1H), 7.13-7.06 (m, 3H), 6.93-6.85 (m, 4H), 6.73 (s, 1H), 5.34 (s, 1H), 4.11-4.02 (m, 2H), 3.80 (s, 3H), 3.57 (s, 3H), 1.41 (t, J=6.8 Hz, 3H); MS (ESI): m/z 492.0 [M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09067893B2
Source datasetuspto-grants-2015_06
ORD IDord-08028df1e2ae4d8295f35ac79a92f9f4
Source noteuspto-grants-2015_06