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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 924813Generated: October 28, 2026

Hydrochloric Acid → HCID 51348213, compound

https://huagongshe.com/reaction/924813

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantUreaHCID 1176—
Reactant3-Ethoxy-4-hydroxy-5-nitrobenzaldehydeHCID 584878—
ReactantHCID 12771977HCID 12771977—
SolventEthanolHCID 702—
ProductHCID 51348213HCID 5134821345%

Reaction Steps

A mixture of 1-(4-(methoxymethoxy)phenyl)-2-phenylethanone (Intermediate 20) (100 mg, 0.39 mmol), 3-ethoxy-4-hydroxy-5-nitrobenzaldehyde (69 mg, 0.33 mmol), urea (59 mg, 0.98 mmol), and concentrated HCl solution (0.03 mL, 0.33 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 48 (65.12 mg, yield 45%). 1H NMR (CD3OD 400 MHz): δ 7.62 (s, 1H), 7.20 (s, 1H), 7.10-7.05 (m, 5H), 6.90 (d, J=6.8 Hz, 2H), 6.66 (d, J=8.0 Hz, 2H), 5.31 (s, 1H), 4.11-4.04 (m, 2H), 1.41 (t, J=6.8 Hz, 3H); MS (ESI): m/z 448.0[M+1]+.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09283229B2
Source datasetuspto-grants-2016_03
ORD IDord-6801bdb482d340f495dffa97e1921c91
Source noteuspto-grants-2016_03