Triethylamine → 2-((1S)-1-tert-Butoxycarbonyl-2-(4-(2-methoxycarbonyl-ethyl)-benzoylamino)-ethylsulfamoyl)-benzoic acid methyl ester

HRID 352675Notes

Reaction equation

HRID 352675 reaction equation
[C:1]([O:5][C:6](=[O:25])[C@@H:7]([NH2:24])[CH2:8][NH:9][C:10](=[O:23])[C:11]1[CH:16]=[CH:15][C:14]([CH2:17][CH2:18][C:19]([O:21][CH3:22])=[O:20])=[CH:13][CH:12]=1)([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[CH3:33][O:34][C:35]([C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][C:38]=1[S:43](Cl)(=[O:45])=[O:44])=[O:36]>CN(C)C=O>[CH3:33][O:34][C:35](=[O:36])[C:37]1[CH:42]=[CH:41][CH:40]=[CH:39][C:38]=1[S:43](=[O:44])(=[O:45])[NH:24][C@H:7]([C:6]([O:5][C:1]([CH3:4])([CH3:2])[CH3:3])=[O:25])[CH2:8][NH:9][C:10](=[O:23])[C:11]1[CH:12]=[CH:13][C:14]([CH2:17][CH2:18][C:19]([O:21][CH3:22])=[O:20])=[CH:15][CH:16]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 117830Benzoic acid, 2-(chlorosulfonyl)-, methyl esterHCID 15550489(2S)-2-Amino-3-(4-(2-methoxycarbonyl-ethyl)-benzoylamino)-propionic acid tert-butyl ester

Product 1

HCID 570397222-((1S)-1-tert-Butoxycarbonyl-2-(4-(2-methoxycarbonyl-ethyl)-benzoylamino)-ethylsulfamoyl)-benzoic acid methyl ester

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

0.123 g (0.35 mmol) of (2S)-2-amino-3-(4-(2-methoxycarbonyl-ethyl)-benzoylamino)-propionic acid tert-butyl ester was dissolved in 2 ml of dimethylformamide and treated with 0.196 ml (1.4 mmol) of triethylamine and 0.164 g (0.7 mmol) of 2-(methoxycarbonyl)-benzenesulfonyl chloride. The solution was stirred for 4 hours at room temperature. The solvent was removed in vacuo, the residue was dissolved in dichloromethane and the solution was washed three times with water. The organic phase was dried with sodium sulfate, filtered and the solvent was removed in vacuo. The residue was chromatographed on silica gel eluting with n-heptane/ethyl acetate (1/1). Yield 75 mg. MS (ES+): m/e=549 (M+H+).

Workup

  1. customThe solvent was removed in vacuo
  2. dissolutionthe residue was dissolved in dichloromethane
  3. washthe solution was washed three times with water
  4. dry with materialThe organic phase was dried with sodium sulfate
  5. filtrationfiltered
  6. customthe solvent was removed in vacuo
  7. customThe residue was chromatographed on silica gel eluting with n-heptane/ethyl acetate (1/1)

Sources & evidence

ORD record
ord-7a22861c4178446ab6ea39db6bc28d8a
Source dataset
uspto-grants-2004_06
Patent number
US06747148B2

Reaction notes

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