Sodium Chloride → (2S, 4S)-1-t-Butoxycarbonyl-2-ethylcarbamoyl-4-methanesulfonyloxypyrrolidine

HRID 1030160Notes

Reaction equation

HRID 1030160 reaction equation
C(N(CC)CC)C.[CH3:8][S:9](Cl)(=[O:11])=[O:10].[C:13]([O:17][C:18]([N:20]1[CH2:24][C@@H:23]([OH:25])[CH2:22][C@H:21]1[C:26](=[O:30])[NH:27][CH2:28][CH3:29])=[O:19])([CH3:16])([CH3:15])[CH3:14].[Cl-].[Na+]>O1CCCC1>[C:13]([O:17][C:18]([N:20]1[CH2:24][C@@H:23]([O:25][S:9]([CH3:8])(=[O:11])=[O:10])[CH2:22][C@H:21]1[C:26](=[O:30])[NH:27][CH2:28][CH3:29])=[O:19])([CH3:16])([CH3:15])[CH3:14]

Participants

6

Reactant 4

HCID 5234Sodium ChlorideHCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 57061747(2S, 4S)-1-t-Butoxycarbonyl-2-ethylcarbamoyl-4-hydroxypyrrolidine

Product 1

HCID 57182446(2S, 4S)-1-t-Butoxycarbonyl-2-ethylcarbamoyl-4-methanesulfonyloxypyrrolidine

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

13.81 ml of triethylamine and subsequently 7.65 ml of methanesulfonyl chloride were added, whilst ice-cooling, to a solution of 23.20 g of (2S, 4S)-1-t-butoxycarbonyl-2-ethylcarbamoyl-4-hydroxypyrrolidine dissolved in 250 ml of dry tetrahydrofuran, and then the mixture was stirred at 0° to 5° C. for 30 minutes. The reaction mixture was then poured into an aqueous solution of sodium chloride and extracted with ethyl acetate. The extract was washed with an aqueous solution of sodium chloride and dried over anhydrous magnesium sulfate. The solvent was then removed by distillation under reduced pressure, to afford 26.54 g of the title compound as colorless crystals, melting at 138°-140° C.

Workup

  1. extractionextracted with ethyl acetate
  2. washThe extract was washed with an aqueous solution of sodium chloride
  3. dry with materialdried over anhydrous magnesium sulfate
  4. customThe solvent was then removed by distillation under reduced pressure

Sources & evidence

ORD record
ord-e715d4d970474d348230bf980a23316c
Source dataset
uspto-grants-1992_04
Patent number
US05104867

Reaction notes

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