Triethylamine → (3S)-3-methanesulfonyloxy-1-(p-nitrobenzyloxycarbonyl)pyrrolidine

HRID 891727Notes

Reaction equation

HRID 891727 reaction equation
[OH:1][C@H:2]1[CH2:6][CH2:5][N:4]([C:7]([O:9][CH2:10][C:11]2[CH:16]=[CH:15][C:14]([N+:17]([O-:19])=[O:18])=[CH:13][CH:12]=2)=[O:8])[CH2:3]1.[CH3:20][S:21](Cl)(=[O:23])=[O:22].C(N(CC)CC)C>C(Cl)Cl>[CH3:20][S:21]([O:1][C@H:2]1[CH2:6][CH2:5][N:4]([C:7]([O:9][CH2:10][C:11]2[CH:16]=[CH:15][C:14]([N+:17]([O-:19])=[O:18])=[CH:13][CH:12]=2)=[O:8])[CH2:3]1)(=[O:23])=[O:22]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 69544006(3S)-3-hydroxy-1-(p-nitrobenzyloxycarbonyl)pyrrolidine

Product 1

HCID 86590876(3S)-3-methanesulfonyloxy-1-(p-nitrobenzyloxycarbonyl)pyrrolidineYield 103.2%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of (3S)-3-hydroxy-1-(p-nitrobenzyloxycarbonyl)pyrrolidine (4.00 g, 15.0 mmol) (obtained as described in Reference Example 53(2)) in methylene chloride (120 ml) were added methanesulfonyl chloride (1.28 ml, 16.5 mmol) and triethylamine (2.31 ml, 16.5 mmol) in an ice bath. After stirring the mixture in the ice bath for 10 minutes, the mixture was stirred at room temperature for 2.5 hours. After checking the completion of the reaction, the reaction mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate solution. The organic layer was washed with saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using n-hexane:ethyl acetate (1:2)→ethyl acetate as the eluant to afford (3S)-3-methanesulfonyloxy-1-(p-nitrobenzyloxycarbonyl)pyrrolidine (5.33 g, yield 100%) as a colorless and transparent syrup.

Workup

  1. customthe completion of the reaction
  2. customthe reaction mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate solution
  3. washThe organic layer was washed with saturated aqueous sodium chloride solution
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by chromatography on a silica gel column

Sources & evidence

ORD record
ord-a0f141cfae93421a886d22c205c18a45
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

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