Dimethylformamide → HCID 57522481, compound

HRID 554456Notes

Reaction equation

HRID 554456 reaction equation
[Cl:1][C:2]1[N:7]=[CH:6][C:5]([S:8]([N:11]2[C:15]([C:16]3[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=3)=[CH:14][C:13]([CH2:22][N:23]([CH3:31])C(=O)OC(C)(C)C)=[CH:12]2)(=[O:10])=[O:9])=[CH:4][CH:3]=1.[CH3:32][N:33](C)C=O>C(OCC)(=O)C.[C-]#N.[Zn+2].[C-]#N.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>[ClH:1].[CH3:31][NH:23][CH2:22][C:13]1[CH:14]=[C:15]([C:16]2[CH:21]=[CH:20][CH:19]=[CH:18][CH:17]=2)[N:11]([S:8]([C:5]2[CH:4]=[CH:3][C:2]([C:32]#[N:33])=[N:7][CH:6]=2)(=[O:9])=[O:10])[CH:12]=1

Participants

6

Reactant 2

HCID 6228DimethylformamideHCID 86620796HCID 86620796, compound

Product 1

HCID 57522481HCID 57522481, compound

Reagents, catalysts & solvents 3

HCID 11186Zinc cyanide (Zn(CN)2)CatalystHCID 178418397HCID 178418397, compoundCatalystHCID 8857Ethyl AcetateSolvent

Conditions

Temperature
100 °C

Procedure

Under an argon atmosphere, a mixture of tert-butyl {[1-(6-chloro-3-pyridinesulfonyl)-5-phenyl-1H-pyrrol-3-yl]methyl}methylcarbamate (100 mg), zinc (II) cyanide (51 mg), tetrakis(triphenylphosphine)palladium (50 mg) and N,N-dimethylformamide (4 mL) was stirred at 100° C. for 2 hr. The reaction mixture was diluted with ethyl acetate, and washed successively saturated aqueous sodium hydrogencarbonate solution, water and saturated brine. The mixture was dried over anhydrous magnesium sulfate, and the solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=19:1→7:3) to give N-Boc compound of the title compound. The obtained N-Boc compound was dissolved in ethyl acetate (2 mL), and a 4 mol/L hydrogen chloride-ethyl acetate solution (2 mL) was added. The mixture was stirred at room temperature for 1 hr, and the solvent was evaporated under reduced pressure. The residue was crystallized from ethanol to give the title compound (yield 57 mg, 68%).

Workup

  1. washwashed successively saturated aqueous sodium hydrogencarbonate solution, water and saturated brine
  2. dry with materialThe mixture was dried over anhydrous magnesium sulfate
  3. customthe solvent was evaporated under reduced pressure
  4. customThe residue was purified by silica gel column chromatography (eluent: hexane-ethyl acetate=19:1→7:3)

Sources & evidence

ORD record
ord-107b734dd15b449b956a5954323fc3bf
Source dataset
uspto-grants-2011_11
Patent number
US08048909B2

Reaction notes

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