Triethylamine → (2S,4R)-tert-butyl-4-(tert-butyldimethylsilyloxy)-2-((methylsulfonyloxy)methyl)pyrrolidine-1-carboxylate

HRID 1029646Notes

Reaction equation

HRID 1029646 reaction equation
[Si:1]([O:8][C@H:9]1[CH2:13][N:12]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[C@H:11]([CH2:21][OH:22])[CH2:10]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2].[CH3:23][S:24](Cl)(=[O:26])=[O:25].C(N(CC)CC)C>ClCCl>[Si:1]([O:8][C@H:9]1[CH2:13][N:12]([C:14]([O:16][C:17]([CH3:20])([CH3:19])[CH3:18])=[O:15])[C@H:11]([CH2:21][O:22][S:24]([CH3:23])(=[O:26])=[O:25])[CH2:10]1)([C:4]([CH3:7])([CH3:6])[CH3:5])([CH3:3])[CH3:2]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 11078078tert-butyl (2S,4R)-4-((tert-butyldimethylsilyl)oxy)-2-(hydroxymethyl)pyrrolidine-1-carboxylate

Product 1

HCID 14117008(2S,4R)-tert-butyl-4-(tert-butyldimethylsilyloxy)-2-((methylsulfonyloxy)methyl)pyrrolidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of (2S,4R)-4-(tert-butyldimethylsilyloxy)-1-(tert-butoxycarbonyl)-2-hydroxymethylpyrrolidine (5.3 g) and methanesulfonyl chloride (1.49 ml) in dichloromethane (40 ml) was added dropwise triethylamine (3.2 ml) at 0° C. After one hour, the reaction mixture was washed in turn with 1N-hydrochloric acid, water and brine. The organic layer was dried over magnesium sulfate, and evaporated to give an oil, which was chromatographed on silica gel (250 ml) eluting with a mixture of hexane and ethyl acetate (2:1, V/V) to give (2S,4R)-4-(tert-butyldimethylsilyloxy)-1-(tert-butoxycarbonyl)-2-methanesulfonyloxymethylpyrrolidine (6.06 g).

Workup

  1. washthe reaction mixture was washed in turn with 1N-hydrochloric acid, water and brine
  2. dry with materialThe organic layer was dried over magnesium sulfate
  3. customevaporated
  4. customto give an oil, which
  5. customwas chromatographed on silica gel (250 ml)
  6. washeluting with a mixture of hexane and ethyl acetate (2:1, V/V)

Sources & evidence

ORD record
ord-f49b655f60034d6ea3ced44424aad952
Source dataset
uspto-grants-1992_04
Patent number
US05102877

Reaction notes

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