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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 562481Generated: November 1, 2026

Trifluoroacetic acid → 1-{2-[6-(1,4-Oxazepan-4-yl)pyrimidin-4-yl]-3-oxo-2,3-dihydro-1H-pyrazol-4-yl}-1H-imidazole-4-carbonitrile

https://huagongshe.com/reaction/562481

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTrifluoroacetic acidHCID 6422—
Reactant4-(6-Hydrazinylpyrimidin-4-yl)-1,4-oxazepaneHCID 57925070—
ReactantEthyl 3-(N,N-dimethylamino)-2-(4-cyano-1H-imidazol-1-yl)acrylateHCID 66726020—
SolventWaterHCID 962—
Product1-{2-[6-(1,4-Oxazepan-4-yl)pyrimidin-4-yl]-3-oxo-2,3-dihydro-1H-pyrazol-4-yl}-1H-imidazole-4-carbonitrileHCID 57925062—

Reaction Conditions

Temperature100 °C

Reaction Steps

A mixture of 200 mg (0.9 mmol) of the compound from Example 6A, 178 mg (0.9 mmol) of the compound from Example 14A and 33 μl (49 mg, 0.4 mmol) of trifluoroacetic acid in 3 ml of water is stirred at 100° C. for 16 h. The precipitated solid is filtered off and washed first with water and then with diethyl ether. The product is dried under reduced pressure. Yield: 120 mg (40% of theory)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08067407B2
Source datasetuspto-grants-2011_11
ORD IDord-6f9e748afd30451c8be9c4389f9ac56f
Source noteuspto-grants-2011_11