Triethylamine → 5-(2-formyl-1-methyl-1H-imidazol-5-yl)-4-[(4-methyl-1H-indol-5-yl)amino]nicotinonitrile

HRID 506198Notes

Reaction equation

HRID 506198 reaction equation
I[C:2]1[CH:3]=[N:4][CH:5]=[C:6]([C:9]=1[NH:10][C:11]1[C:12]([CH3:20])=[C:13]2[C:17](=[CH:18][CH:19]=1)[NH:16][CH:15]=[CH:14]2)[C:7]#[N:8].[CH3:21][N:22]1[C:26]([Sn](CCCC)(CCCC)CCCC)=[CH:25][N:24]=[C:23]1[CH:40]=[O:41].C(N(CC)CC)C>O1CCOCC1.Cl[Pd](Cl)([P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1)[P](C1C=CC=CC=1)(C1C=CC=CC=1)C1C=CC=CC=1>[CH:40]([C:23]1[N:22]([CH3:21])[C:26]([C:2]2[CH:3]=[N:4][CH:5]=[C:6]([C:9]=2[NH:10][C:11]2[C:12]([CH3:20])=[C:13]3[C:17](=[CH:18][CH:19]=2)[NH:16][CH:15]=[CH:14]3)[C:7]#[N:8])=[CH:25][N:24]=1)=[O:41]

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 222566721-methyl-5-(tributylstannyl)-1H-imidazole-2-carbaldehydeHCID 684438315-iodo-4-[(4-methyl-1H-indol-5-yl)amino]nicotinonitrile

Product 1

HCID 866168365-(2-formyl-1-methyl-1H-imidazol-5-yl)-4-[(4-methyl-1H-indol-5-yl)amino]nicotinonitrileYield 43%

Reagents, catalysts & solvents 2

HCID 178418476HCID 178418476, compoundCatalystHCID 312751,4-DioxaneSolvent

Procedure

A mixture of 5-iodo-4[(4-methyl-1H-indol-5-yl)amino]nicotinonitrile (250 mg, 0.67 mmol), 1-methyl-5-(tributylstannyl)-1H-imidazole-2-carbaldehyde (see e.g., U.S. Pat. No. 6,521,618) (401 mg, 1.0 mmol), dichlorobis(triphenylphosphine)palladium(II) (24 mg, 0.034 mmol), and triethylamine (74.9 mg, 0.74 mmol) in dioxane (6 mL) was heated at the reflux temperature for 22 h, cooled to room temperature, and concentrated in vacuo. The residue was suspended in CH2Cl2 and filtered and the solid was washed with CH2Cl2. The combined filtrate and washings were concentrated in vacuo and the residue was purified by column chromatography (ethyl acetate/CH2Cl2, 20% to 90%; MeOH/ethyl acetate, 5%) to provide 103 mg (43%) of 5-(2-formyl-1-methyl-1H-imidazol-5-yl)-4-[(4-methyl-1H-indol-5-yl)amino]nicotinonitrile 537 as a dark yellow solid. MS: 355.2 (M+H); melting range: 200-202° C.; and HRMS: 357.1458.

Workup

  1. concentrationconcentrated in vacuo
  2. filtrationfiltered
  3. washthe solid was washed with CH2Cl2
  4. concentrationThe combined filtrate and washings were concentrated in vacuo
  5. customthe residue was purified by column chromatography (ethyl acetate/CH2Cl2, 20% to 90%; MeOH/ethyl acetate, 5%)

Sources & evidence

ORD record
ord-cd84a79ac4314d75a7063b714e672672
Source dataset
uspto-grants-2010_08
Patent number
US07781591B2

Reaction notes

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