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

HRID 1160394Notes

Reaction equation

HRID 1160394 reaction equation
[N+:1]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][C:5]=1[S:10](Cl)(=[O:12])=[O:11])([O-:3])=[O:2].[NH2:14][CH2:15][C@@H:16]([NH:25][C:26]1[CH:31]=[CH:30][C:29]([C:32]#[N:33])=[C:28]([Cl:34])[CH:27]=1)[CH2:17][C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19].CCN(CC)CC>C(Cl)Cl>[Cl:34][C:28]1[CH:27]=[C:26]([NH:25][C@H:16]([CH2:15][NH:14][S:10]([C:5]2[CH:6]=[CH:7][CH:8]=[CH:9][C:4]=2[N+:1]([O-:3])=[O:2])(=[O:12])=[O:11])[CH2:17][C:18]([O:20][C:21]([CH3:22])([CH3:24])[CH3:23])=[O:19])[CH:31]=[CH:30][C:29]=1[C:32]#[N:33]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 155402-Nitrobenzenesulfonyl chlorideHCID 595161531,1-Dimethylethyl (3S)-4-amino-3-[(3-chloro-4-cyanophenyl)amino]butanoate

Product 1

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

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Procedure

A solution of 2-nitrobenzenesulfonyl chloride (14.15 g, 64 mmol) in CH2Cl2 (50 mL) was added dropwise over 20 min to an ice cold solution of 1,1-dimethylethyl (3S)-4-amino-3-[(3-chloro-4-cyanophenyl)amino]butanoate (19.8 g, 64 mmol) and Et3N (6.5 g, 64 mmol) in CH2Cl2 (150 mL) and the reaction was stirred at room temperature for 30 min. The reaction was washed with H2O and cold 0.1 N HCl. The organic layer was dried over CaCl2, filtered, and concentrated. The crude product was used directly in the next step.

Workup

  1. washThe reaction was washed with H2O and cold 0.1 N HCl
  2. dry with materialThe organic layer was dried over CaCl2
  3. filtrationfiltered
  4. concentrationconcentrated

Sources & evidence

ORD record
ord-ca3a3cca1c8f4310bcf52312e96b2c82
Source dataset
uspto-grants-2010_10
Patent number
US07816395B2

Reaction notes

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