Bicarbonate Ion → (2R)-N-(2-(2-(methylsulfonylamino)phenyl)ethyl)-N-methyl-2-(methylamino)-3-(2-naphthyl)propionamide

HRID 650826

Reaction equation

HRID 650826 reaction equation
FC(F)(F)C(O)=O.C(O[C:13](=O)[N:14]([C@@H:16]([C:28](=[O:44])[N:29]([CH2:31][CH2:32][C:33]1[CH:38]=[CH:37][CH:36]=[CH:35][C:34]=1[NH:39][S:40]([CH3:43])(=[O:42])=[O:41])[CH3:30])[CH2:17][C:18]1[CH:27]=[CH:26][C:25]2[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=2)[CH:19]=1)C)(C)(C)C.C(=O)([O-])O.[Na+].C(=O)([O-])O>ClCCl>[CH3:43][S:40]([NH:39][C:34]1[CH:35]=[CH:36][CH:37]=[CH:38][C:33]=1[CH2:32][CH2:31][N:29]([CH3:30])[C:28](=[O:44])[C@H:16]([NH:14][CH3:13])[CH2:17][C:18]1[CH:27]=[CH:26][C:25]2[C:20](=[CH:21][CH:22]=[CH:23][CH:24]=2)[CH:19]=1)(=[O:42])=[O:41]

Participants

6

Reactant 4

HCID 769Bicarbonate IonHCID 6422Trifluoroacetic acidHCID 516892Sodium BicarbonateHCID 53661815N-((1R)-1-(N-(2-(2-(methylsulfonylamino)phenyl)ethyl)-N-methylcarbamoyl)-2-(2-naphthyl)ethyl)-N-methylcarbamic acid tert-butyl-ester

Product 1

HCID 10670733(2R)-N-(2-(2-(methylsulfonylamino)phenyl)ethyl)-N-methyl-2-(methylamino)-3-(2-naphthyl)propionamideYield 78.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent2×

Conditions

Temperature
0 °C

Procedure

At 0° C., trifluoroacetic acid (1.5 ml) was added to a solution of N-((1R)-1-(N-(2-(2-(methylsulfonylamino)phenyl)ethyl)-N-methylcarbamoyl)-2-(2-naphthyl)ethyl)-N-methylcarbamic acid tert-butyl-ester (245 mg, 0.45 mmol) in dichloromethane (1.5 ml). The reaction mixture was stirred for 1.75 h at 0° C. Dichloromethane (5 ml) and a saturated aqueous solution of sodium hydrogen carbonate (6 ml) were added successively. Solid soidum hydrogen carbonate was added until pH 7 was obtained. The phases were separated. The aqueous phase was extracted with dichloromethane (3×50 ml). The combined organic layers were dried over magnesium sulfate. The solvent was removed in vacuo. The crude product was purified by flash chromatography on silica (30 g), using dichloromethane/methanol/25% aqueous ammonia (100:10:1) as eluent, to give 155 mg of (2R)-N-(2-(2-(methylsulfonylamino)phenyl)ethyl)-N-methyl-2(methylamino)-3-(2-naphthyl)propionamide.

Workup

  1. customwas obtained
  2. customThe phases were separated
  3. extractionThe aqueous phase was extracted with dichloromethane (3×50 ml)
  4. dry with materialThe combined organic layers were dried over magnesium sulfate
  5. customThe solvent was removed in vacuo
  6. customThe crude product was purified by flash chromatography on silica (30 g)

Sources & evidence

ORD record
ord-03ede76d78dc4870ad971d0e3e77b321
Source dataset
uspto-grants-2001_08
Patent number
US06274584B1

Linked notes

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