Back
HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 924805Generated: November 2, 2026

Hydrochloric Acid → HCID 51348075, compound

https://huagongshe.com/reaction/924805

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 numberUS09283229B2
Source datasetuspto-grants-2016_03
ORD IDord-7e8b553e8e4d47489a2c3f1fdca7dfbe
Source noteuspto-grants-2016_03