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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 573640Generated: October 30, 2026

Ethyl Acetate → HCID 53250547, compound

https://huagongshe.com/reaction/573640

Reaction equation

Participants

RoleNameHCIDCharge
ReactantEthyl AcetateHCID 8857—
ReactantPotassium CarbonateHCID 11430—
Reactant2-Methoxy-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridineHCID 17750508—
ReactantN-(3-bromo-2,6-dimethylthieno[2,3-b]pyridin-4-yl)-3-chlorobenzenesulfonamideHCID 68324076—
CatalystHCID 178418397HCID 178418397—
SolventWaterHCID 962—
Solvent1,4-DioxaneHCID 31275—
ProductHCID 53250547HCID 5325054712.8%

Reaction Conditions

Temperature120 °C

Reaction Steps

Under nitrogen, N-(3-bromo-2,6-dimethylthieno[2,3-b]pyridin-4-yl)-3-chlorobenzenesulfonamide (Example 61) (65 mg, 0.151 mmol) was dissolved in 1,4-dioxane (1.5 mL) and water (0.7 mL). 2-(Methyloxy)-6-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridine (53.1 mg, 0.226 mmol), tetrakis(triphenylphosphine)palladium(0) (17.40 mg, 0.015 mmol) and potassium carbonate (62.4 mg, 0.452 mmol) were then added and the mixture heated in a microwave at 120° C. for 15 min (×2). Ethyl acetate (10 mL) was added and the mixture washed with water (2×5 mL). The organic layer was dried over MgSO4, filtered and the solvent removed in vacuo. The residue was purified by normal phase chromatography, eluting with a gradient of 0-30% ethyl acetate in cyclohexane, and then further purified by MDAP (acidic conditions), to give the title compound (8.9 mg). LCMS (A) m/z: 460 [M+1]+, Rt 1.45 min (acidic).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09029545B2
Source datasetuspto-grants-2015_05
ORD IDord-e782a764423a479e9f22b57c4adaada6
Source noteuspto-grants-2015_05