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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 923189Generated: November 2, 2026

Diisopropylethylamine → N-(3-(1H-imidazol-1-yl)-5-(trifluoromethyl)phenyl)-3-(imidazo[1,2-a]pyrazin-3-ylethynyl)-4-methylbenzamide

https://huagongshe.com/reaction/923189

Reaction equation

Participants

RoleNameHCIDCharge
ReactantDiisopropylethylamineHCID 81531—
ReactantN-(3-(1H-imidazol-1-yl)-5-(trifluoromethyl)phenyl)-3-iodo-4-methylbenzamideHCID 44222638—
Reactant3-Ethynyl-imidazo[1,2-A]pyrazineHCID 72207272—
CatalystCopper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)HCID 24350—
CatalystHCID 178418397HCID 178418397—
SolventDimethylformamideHCID 6228—
ProductN-(3-(1H-imidazol-1-yl)-5-(trifluoromethyl)phenyl)-3-(imidazo[1,2-a]pyrazin-3-ylethynyl)-4-methylbenzamideHCID 1621486035.6%

Reaction Steps

A mixture of 3-Ethynylimidazo[1,2-a]pyrazine (0.075 g, 0.52 mmol), 0.245 g (0.52 mmol) of N-(3-(1H-imidazol-1-yl)-5-(trifluoromethyl)phenyl)-3-iodo-4-methylbenzamide, 0.030 g (0.026 mmol) of Pd(PPh3)4, 0.007 g (0.039 mmol) of CuI, and 0.14 mL (0.78 mmol) of diisopropylethylamine in 3.0 mL of DMF was stirred at ambient temperature overnight under an atmosphere of N2. The reaction mixture was concentrated and the crude product was purified by silica gel flash chromatography (eluted with 10% EtOAc/hexanes, then 100% EtOAc, then 10% MeOH/EtOAc) to provide 0.090 g of product as a solid: 487 m/z (M+H).

Provenance & Evidence

DOI10.6084/m9.figshare.5104873.v1
Patent numberUS09278971B2
Source datasetuspto-grants-2016_03
ORD IDord-75876e143998495fae5adfcebe07e8b1
Source noteuspto-grants-2016_03