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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 30608Generated: October 28, 2026

Formaldehyde → HCID 43234280, compound

https://huagongshe.com/reaction/30608

Reaction equation

Participants

RoleNameHCIDCharge
ReactantFormaldehydeHCID 712—
Reactant4'-HydroxyacetophenoneHCID 7469—
Reactant1-MethylpiperazineHCID 53167—
SolventEthanolHCID 702—
ProductHCID 43234280HCID 4323428055%

Reaction Steps

A solution of formaldehyde (37% w/w, 8.2 mL) was added to a solution of 4′-Hydroxy acetophenone (100 mmol), and N-methylpiperazine (110 mmol) in EtOH. Heated at reflux overnight. The solvent was evaporated on celite and the residue was purified by flash chromatography and crystallized from heptane to give the title product as white needles in 55% yield. 1H-NMR (DMSO-d6) δ 7.76 (dd, 1H), 7.74 (s, 1H), 6.81 (d, 1H), 3.69 (s, 2H), 2.47 (br, 4H), 2.46 (s, 3H), 2.35 (br, 4H), 2.17 (s, 3H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07423181B2
Source datasetuspto-grants-2008_09
ORD IDord-0bdd813b60bc4cafa0b55775a8a5a49a
Source noteuspto-grants-2008_09