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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1958298Generated: November 3, 2026

Triethylamine → N,N,5-Trimethyl-3-oxo-4-[3-(trifluoromethyl)phenyl]-3,4-dihydropyrazine-2-carboxamide

https://huagongshe.com/reaction/1958298

Reaction equation

Participants

RoleNameHCIDCharge
ReactantTriethylamineHCID 8471—
ReactantDimethylamine, hydrochlorideHCID 10473—
ReactantMethanaminium, N-((dimethylamino)(3H-1,2,3-triazolo(4,5-b)pyridin-3-yloxy)methylene)-N-methyl-, hexafluorophosphate(1-) (1:1)HCID 9886157—
Reactant5-Methyl-3-oxo-4-[3-(trifluoromethyl)phenyl]-3,4-dihydropyrazine-2-carboxylic acidHCID 66738749—
SolventWaterHCID 962—
SolventDimethylformamideHCID 6228—
ProductN,N,5-Trimethyl-3-oxo-4-[3-(trifluoromethyl)phenyl]-3,4-dihydropyrazine-2-carboxamideHCID 66738834—

Reaction Steps

A mixture of 5-methyl-3-oxo-4-[3-(trifluoromethyl)phenyl]-3,4-dihydropyrazine-2-carboxylic acid (0.21 g, 0.7 mmol), HATU (0.266 g, 0.7 mmol) and Et3N (0.293 g, 2.9 mmol) in DMF (2 ml) was reacted with dimethylamine HCl. After 2 h, the reaction mixture was diluted with water and extracted with ethyl acetate (3×5 ml). The organic phase was dried (MgSO4), filtered and evaporated. No further purification was performed.

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS08410114B2
Source datasetuspto-grants-2013_04
ORD IDord-990f40a5b501402b95c76665386f8b4f
Source noteuspto-grants-2013_04