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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 659330Generated: October 31, 2026

Hydrochloric Acid → HCID 24852683, compound

https://huagongshe.com/reaction/659330

Reaction equation

Participants

RoleNameHCIDCharge
ReactantHydrochloric AcidHCID 313—
ReactantEthanolHCID 702—
Reactant1,4-DioxaneHCID 31275—
ReactantHCID 24852575HCID 24852575—
ProductHCID 24852683HCID 24852683—

Reaction Conditions

Temperature150 °C

Reaction Steps

5-(1-Benzyl-2-oxo-1,2,3,4-tetrahydropyrido[2,3-b]pyrazin-7-yl)pyridine-2-carbonitrile (32 mg) was mixed with ethanol (1.5 mL) and 4 N HCl (2.0 mL) in dioxane and then heated in a microwave oven at 150° C. for 80 minutes. The reaction mixture was concentrated and purified with preparative reversed-phase HPLC to give the title compound as an orange solid. LCMS: m/z=389.22 (M+H+), 1H-NMR (CD3OD, 400 MHz) δ 1.42 (3H, t, J=7.1 Hz), 4.44 (4H, m), 5.35 (2H, s), 7.28 (1H, m), 7.37 (5H, m), 7.55 (1H, d, J=1.8 Hz), 8.00 (1H, d, J=1.8 Hz), 8.03 (1H, dd, J=8.1, 2.3 Hz), 8.17 (1H, d, J=8.3 Hz), 8.69 (1H, d, J=2.0 Hz).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08080561B2
Source datasetuspto-grants-2011_12
ORD IDord-0da50f1e104a4affbc05fd1865eb7237
Source noteuspto-grants-2011_12