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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 2243443Generated: October 31, 2026

2-Aminothiazole → HCID 178493128, compound

https://huagongshe.com/reaction/2243443

Reaction equation

Participants

RoleNameHCIDCharge
Reactant2-AminothiazoleHCID 2155—
Reactant1-HydroxybenzotriazoleHCID 75771—
ReactantDiisopropylethylamineHCID 81531—
Reactant4-Amino-5-chloro-2-methoxybenzoic acidHCID 81626—
Reactant1,3-Propanediamine, N'-(ethylcarbonimidoyl)-N,N-dimethyl-, monohydrochlorideHCID 2723939—
Solvent1,2-DichloroethaneHCID 11—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
ProductHCID 178493128HCID 178493128—

Reaction Conditions

Temperature60 °C

Reaction Steps

4-Amino-5-chloro-2-methoxy-benzoic acid (19.8 mmol) ) was dissolved in DMF (10 mL) and 1,2-dichloroethane (80 mL). DIPEA (19.8 mmol), 1-(3-dimethylaminopropyl)-3-ethyl-carbodiimide hydrochloride (19.8 mmol), 1-hydroxybenzotriazole (19.8 mmol) and 2-aminothiazole (19.8 mmol) was added and the reaction mixture was stirred at 60° C. over night. The volume was reduced in vacuo, and water (60 mL) was added. The mixture was extracted with ethyl acetate, the organic phase was washed with NH4Cl (aq., sat.), dried over MgSO4, filtered and evaporated. The crude product was re-crystallized from ethyl acetate.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS07674912B2
Source datasetuspto-grants-2010_03
ORD IDord-538fffcc9add4d8d877a8756247553bf
Source noteuspto-grants-2010_03