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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1930706Generated: November 2, 2026

Potassium Carbonate → 4-(1-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl)-N-(3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl)-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-2-amine

https://huagongshe.com/reaction/1930706

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
Reactant3-(2-(3,5-dimethyl-1H-pyrazol-1-yl)propanoyl)dihydro-2H-pyran-4(3H)-oneHCID 59333712—
ReactantHCID 178493227HCID 178493227—
SolventEthanolHCID 702—
Product4-(1-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl)-N-(3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl)-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-2-amineHCID 593337113.9%

Reaction Steps

1-(3-Methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl)guanidine (86 mg, 0.28 mmol) and potassium carbonate (77 mg, 0.56 mmol) in EtOH (7 mL) were heated to 60° C. for 10 min followed by the addition of 3-(2-(3,5-dimethyl-1H-pyrazol-1-yl)propanoyl)dihydro-2H-pyran-4(3H)-one (70 mg, 0.28 mmol). The reaction was stirred over night. Solvent was evaporated and the crude product was taken up in DCM and washed with water. The product was purified on a prepHPLC yielding 4-(1-(3,5-dimethyl-1H-pyrazol-1-yl)ethyl)-N-(3-methoxy-4-(4-methyl-1H-imidazol-1-yl)phenyl)-7,8-dihydro-5H-pyrano[4,3-d]pyrimidin-2-amine (5.00 mg, 3.89%). MS (ES+) m/z 460.2 (M+H)+

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08188101B2
Source datasetuspto-grants-2012_05
ORD IDord-85365fdbd7fe497cb21e74997865b571
Source noteuspto-grants-2012_05