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HuagongsheHuagongshe Chemistry Print Report · For research reference only
HRID 1260807Generated: 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/1260807

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 numberUS08470851B2
Source datasetuspto-grants-2013_06
ORD IDord-4276af879bea4471a965e5e3cdeba74d
Source noteuspto-grants-2013_06