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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1508596Generated: October 29, 2026

Pyrazole → HCID 24969552, compound

https://huagongshe.com/reaction/1508596

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPyrazoleHCID 1048—
ReactantCesium carbonateHCID 10796—
ReactantN,N-DimethylethylenediamineHCID 66053—
ReactantHCID 86704644HCID 86704644—
CatalystCopper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)HCID 24350—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 24969552HCID 2496955213.1%

Reaction Conditions

Temperature110 °C

Reaction Steps

(4S,5R)-5-[3,5-Bis(trifluoromethyl)phenyl]-3-({6-chloro-3-[4-fluoro-2-methoxy-5-(propan-2-yl)phenyl]pyridin-2-yl}methyl)-4-methyl-1,3-oxazolidin-2-one chloride (40 mg, 0.066 mmol) and pyrazole (5.40 mg, 0.079 mmol) were dissolved in dioxane (0.7 mL) in a 2-5 mL microwave vial. Cesium carbonate (43.1 mg, 0.132 mmol) and copper(I) iodide (12.6 mg, 0.066 mmol) were added and the mixture was degassed. N,N-dimethylethylenediamine (23.3 mg, 0.264 mmol) was added before sealing the system and heating (thermally) to 110° C. overnight. The reaction was cooled and filtered over Celite® (ethyl acetate wash) and the filtrate was concentrated and was purified by reverse phase HPLC to yield (4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-({6-chloro-3-[4-fluoro-2-methoxy-5-(propan-2-yl)phenyl]pyridin-2-yl}methyl)-4-methyl-1,3-oxazolidin-2-one (5.5 mg, 8.64 μmol). 1H NMR (CD3OD, 500 MHz) δ 8.63 (s, 1H), 7.99 (s, 1H), 7.93 (m, 3H), 7.79 (s, 1H), 7.75 (d, J=8.2 Hz, 1H), 7.17 (br s, 1H), 6.88 (d, J=12.3 Hz, 1H), 6.57 (s, 1H), 5.84 (m, 1H), 4.85 (m, 1H), 4.21 (m, 2H), 3.81 (s, 3H), 3.21 (m, 1H), 1.29 (m, 6H), 0.64 (d, J=41.1 Hz, 3H). SPA=55.8 nM

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09221834B2
Source datasetuspto-grants-2015_12
ORD IDord-8d81fc5c909f4ea6b2edbff1e205d480
Source noteuspto-grants-2015_12