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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2039504Generated: October 31, 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/2039504

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 numberUS08580778B2
Source datasetuspto-grants-2013_11
ORD IDord-9e06d73f45db46758ca98ed32085a60b
Source noteuspto-grants-2013_11