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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 332831Generated: October 27, 2026

Potassium Carbonate → (R)-2-(5-cyano-6-(3-phenylisothiazol-5-ylamino)pyrazin-2-ylamino)butanamide

https://huagongshe.com/reaction/332831

Reaction equation

Participants

RoleNameHCIDCharge
ReactantPotassium CarbonateHCID 11430—
ReactantBinap, (A+-)-HCID 634876—
Reactant3-Phenyl-1,2-thiazol-5-amineHCID 12603879—
Reactant(R)-2-(6-chloro-5-cyanopyrazin-2-ylamino)butanamideHCID 86685581—
Catalystpalladium(II) acetateHCID 167845—
Solvent1,4-DioxaneHCID 31275—
Product(R)-2-(5-cyano-6-(3-phenylisothiazol-5-ylamino)pyrazin-2-ylamino)butanamideHCID 8668562116.9%

Reaction Steps

A mixture of (R)-2-(6-chloro-5-cyanopyrazin-2-ylamino)butanamide (50 mg, 0.208 mmol), 3-phenylisothiazol-5-amine (22 mg, 0.125 mmol), K2CO3 (100 mg, 0.724 mmol), BINAP (25 mg, 0.040 mmol) and Pd(OAc)2 (15 mg, 0.066 mmol) in dioxane (2 mL) was degassed with Ar, then was stirred at 110 C for 4 h. HOAc (0.2 mL) was added. The mixture was concentrated in vacuo. The residue was purified by HPLC to give (R)-2-(5-cyano-6-(3-phenylisothiazol-5-ylamino)pyrazin-2-ylamino)butanamide (8 mg)

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08877760B2
Source datasetuspto-grants-2014_11
ORD IDord-65b89b993db9462da8ef36680d56d38d
Source noteuspto-grants-2014_11