Triethylamine → (2R,3S)-tert-butyl 2-((tert-butyldimethylsilyloxy)methyl)-3-hydroxypyrrolidine-1-carboxylate

HRID 495057Notes

Reaction equation

HRID 495057 reaction equation
[OH:1][C@H:2]1[CH2:6][CH2:5][N:4]([C:7]([O:9][C:10]([CH3:13])([CH3:12])[CH3:11])=[O:8])[C@@H:3]1[CH2:14][OH:15].CCN(CC)CC.[CH3:23][C:24]([Si:27](Cl)([CH3:29])[CH3:28])([CH3:26])[CH3:25]>ClCCl.CN(C1C=CN=CC=1)C>[Si:27]([O:15][CH2:14][C@@H:3]1[C@@H:2]([OH:1])[CH2:6][CH2:5][N:4]1[C:7]([O:9][C:10]([CH3:11])([CH3:12])[CH3:13])=[O:8])([C:24]([CH3:26])([CH3:25])[CH3:23])([CH3:29])[CH3:28]

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 28928tert-Butyldimethylsilyl chlorideHCID 10910976tert-butyl (2R,3S)-3-hydroxy-2-(hydroxymethyl)pyrrolidine-1-carboxylate

Product 1

HCID 14462925(2R,3S)-tert-butyl 2-((tert-butyldimethylsilyloxy)methyl)-3-hydroxypyrrolidine-1-carboxylateYield 99%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent2×

Procedure

To a 0° C. solution of (2R,3S)-tert-butyl 3-hydroxy-2-(hydroxymethyl)pyrrolidine-1-carboxylate (1.0 equiv) and Et3N (1.05 equiv) in dichloromethane (0.5 M) was added TBSCl (1.05 equiv), followed by a few crystals of DMAP. The solution was allowed to warm to room temperature and stirred overnight. The reaction mixture was then diluted with dichloromethane, and washed with sat'd. aq. NaHCO3. The organic layer was dried over anhydrous sodium sulfate, filtered and concentrated in vacuo to provide the title compound (99%), which was used without further purification.

Workup

  1. washwashed with sat'd
  2. dry with materialThe organic layer was dried over anhydrous sodium sulfate
  3. filtrationfiltered
  4. concentrationconcentrated in vacuo

Sources & evidence

ORD record
ord-8b9ed594e1bb490e8e63adf998a912d0
Source dataset
uspto-grants-2009_05
Patent number
US07538223B2

Reaction notes

Loading…