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

HRID 923189Notes

Reaction equation

HRID 923189 reaction equation
[C:1]([C:3]1[N:7]2[CH:8]=[CH:9][N:10]=[CH:11][C:6]2=[N:5][CH:4]=1)#[CH:2].[N:12]1([C:17]2[CH:18]=[C:19]([NH:27][C:28](=[O:37])[C:29]3[CH:34]=[CH:33][C:32]([CH3:35])=[C:31](I)[CH:30]=3)[CH:20]=[C:21]([C:23]([F:26])([F:25])[F:24])[CH:22]=2)[CH:16]=[CH:15][N:14]=[CH:13]1.C(N(C(C)C)CC)(C)C>CN(C=O)C.C1C=CC([P]([Pd]([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)([P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)[P](C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)(C2C=CC=CC=2)C2C=CC=CC=2)=CC=1.[Cu]I>[N:12]1([C:17]2[CH:18]=[C:19]([NH:27][C:28](=[O:37])[C:29]3[CH:34]=[CH:33][C:32]([CH3:35])=[C:31]([C:2]#[C:1][C:3]4[N:7]5[CH:8]=[CH:9][N:10]=[CH:11][C:6]5=[N:5][CH:4]=4)[CH:30]=3)[CH:20]=[C:21]([C:23]([F:26])([F:25])[F:24])[CH:22]=2)[CH:16]=[CH:15][N:14]=[CH:13]1

Participants

7

Reactant 3

HCID 81531DiisopropylethylamineHCID 44222638N-(3-(1H-imidazol-1-yl)-5-(trifluoromethyl)phenyl)-3-iodo-4-methylbenzamideHCID 722072723-Ethynyl-imidazo[1,2-A]pyrazine

Product 1

HCID 16214860N-(3-(1H-imidazol-1-yl)-5-(trifluoromethyl)phenyl)-3-(imidazo[1,2-a]pyrazin-3-ylethynyl)-4-methylbenzamideYield 35.6%

Reagents, catalysts & solvents 3

HCID 24350Copper(1+) iodide; Copper(I) iodide; Cuprous iodide; Cuprous iodide (CuI)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 6228DimethylformamideSolvent

Procedure

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).

Workup

  1. concentrationThe reaction mixture was concentrated
  2. customthe crude product was purified by silica gel flash chromatography (
  3. washeluted with 10% EtOAc/hexanes

Sources & evidence

ORD record
ord-75876e143998495fae5adfcebe07e8b1
Source dataset
uspto-grants-2016_03
Patent number
US09278971B2

Reaction notes

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