Iodoethane → 1,1-Dimethylethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-{ethyl[(2-nitrophenyl)sulfonyl]amino}butanoate

HRID 1160407Notes

Reaction equation

HRID 1160407 reaction equation
[Cl:1][C:2]1[CH:3]=[C:4]([NH:10][C@H:11]([CH2:20][NH:21][S:22]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=2[N+:31]([O-:33])=[O:32])(=[O:24])=[O:23])[CH2:12][C:13]([O:15][C:16]([CH3:19])([CH3:18])[CH3:17])=[O:14])[CH:5]=[CH:6][C:7]=1[C:8]#[N:9].[CH2:34](I)[CH3:35].C([O-])([O-])=O.[K+].[K+]>CN(C=O)C.O>[Cl:1][C:2]1[CH:3]=[C:4]([NH:10][C@H:11]([CH2:20][N:21]([CH2:34][CH3:35])[S:22]([C:25]2[CH:30]=[CH:29][CH:28]=[CH:27][C:26]=2[N+:31]([O-:33])=[O:32])(=[O:23])=[O:24])[CH2:12][C:13]([O:15][C:16]([CH3:18])([CH3:19])[CH3:17])=[O:14])[CH:5]=[CH:6][C:7]=1[C:8]#[N:9]

Participants

6

Reactant 3

HCID 6340IodoethaneHCID 11430Potassium CarbonateHCID 595161751,1-Dimethylethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-{[(2-nitrophenyl)sulfonyl]amino}butanoate

Product 1

HCID 595161701,1-Dimethylethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-{ethyl[(2-nitrophenyl)sulfonyl]amino}butanoate

Reagents, catalysts & solvents 2

HCID 962WaterSolventHCID 6228DimethylformamideSolvent

Procedure

A mixture of the crude 1,1-dimethylethyl (3S)-3-[(3-chloro-4-cyanophenyl)amino]-4-{[(2-nitrophenyl)sulfonyl]amino}butanoate from the previous step, ethyl iodide (2.59 mL, 32.4 mmol) and K2CO3 (325 mesh, 6.71 g, 48.6 mmol) in DMF (93 mL) was stirred at room temperature for 60 min. The reaction was diluted with H2O (200 mL) and extracted with Et2O (3×). The organic extracts were washed with H2O (2×), dried over Na2SO4, filtered, and concentrated. The crude product was used directly in the next step.

Workup

  1. extractionextracted with Et2O (3×)
  2. washThe organic extracts were washed with H2O (2×)
  3. dry with materialdried over Na2SO4
  4. filtrationfiltered
  5. concentrationconcentrated

Sources & evidence

ORD record
ord-97062c53b6064141a184bd1456ea29ac
Source dataset
uspto-grants-2010_10
Patent number
US07816395B2

Reaction notes

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