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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 401030Generated: October 29, 2026

Hydrochloric Acid → HCID 51348215, compound

https://huagongshe.com/reaction/401030

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantUreaHCID 1176—
Reactant3-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 584878—
Reactant1-(2-Chlorophenyl)-2-phenylethan-1-oneHCID 12689827—
SolventEthanolHCID 702—
ProductHCID 51348215HCID 5134821514.3%

Reaction Conditions

Temperature130 °C

Reaction Steps

To a solution of 1-(2-chlorophenyl)-2-phenylethanone (100 mg, 0.43 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (91 mg, 0.43 mmol), and urea (60 mg, 1.29 mmol) in 10 mL of ethanol was added 0.2 mL of concentrated HCl solution. The mixture was stirred at 130° C. for 2 days, concentrated under reduced pressure, and purified by preparative HPLC (40-70% acetonitrile+0.1% trifluoroacetic acid in water, over 15 min.) to give Compound 51 (28.7 mg, yield 14.2%). 1H NMR (CD3OD 400 MHz): δ 7.43 (s, 1H), 7.19-7.04 (m, 5H), 6.79 (d, J=6.0 Hz, 3H), 6.72 (s, 2H), 5.23 (s, 1H), 3.88-3.85 (m, 2H), 1.81 (t, J=6.8 Hz, 3H); MS (ESI): m/z 466.2 [M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08741915B2
Source datasetuspto-grants-2014_06
ORD IDord-97441a751ae045c0b0ee7b640ae9ff8a
Source noteuspto-grants-2014_06