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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2425471Generated: October 28, 2026

Ethyl Acetate → HCID 25096252, compound

https://huagongshe.com/reaction/2425471

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl AcetateHCID 8857—
ReactantCesium carbonateHCID 10796—
Reactant5-Bromo-2-methanesulfonylpyridineHCID 13433424—
ReactantHCID 59205104HCID 59205104—
CatalystBromotris(triphenylphosphine)copper(I)HCID 11251615—
SolventDimethylacetamideHCID 31374—
ProductHCID 25096252HCID 25096252—

Reaction Steps

A mixture of 3-[(2S)-1-(difluoromethoxy)propan-2-yl]oxy-5-hydroxy-N-(5-methylpyrazin-2-yl)benzamide (190 mg, 0.54 mmol), 5-bromo-2-methylsulfonyl-pyridine (CAS no. 98626-95-0) (140 mg, 0.59 mmol), cesium carbonate (350 mg, 1.08 mmol) and bromotris(triphenylphosphine)copper(I) (101 mg, 0.11 mmol) in DMA (5 mL) was stirred in a microwave reactor at 160° C. for 6 hours. Ethyl acetate (50 mL) was added and the mixture washed with water (50 mL), brine (50 mL), dried (MgSO4) and reduced in vacuo. The crude residue was chromatographed on silica, eluting with 10-100% ethyl acetate in isohexane, to give the desired compound (19 mg).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07964725B2
Source datasetuspto-grants-2011_06
ORD IDord-f9b2e16ad0d84863ac30cccecbc87335
Source noteuspto-grants-2011_06