Water → HCID 59556982, compound

HRID 1967278Notes

Reaction equation

HRID 1967278 reaction equation
[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH3:25])[CH:13]([C:15]1([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:17][CH2:16]1)[OH:14])=[O:10])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.FC(F)(F)S(O[Si:32]([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33])(=O)=O.CC1C=CC=C(C)N=1.O>C1COCC1>[CH2:1]([O:8][C:9]([NH:11][C@@H:12]([CH3:25])[CH:13]([C:15]1([C:18]([O:20][C:21]([CH3:24])([CH3:23])[CH3:22])=[O:19])[CH2:17][CH2:16]1)[O:14][Si:32]([C:35]([CH3:38])([CH3:37])[CH3:36])([CH3:34])[CH3:33])=[O:10])[C:2]1[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=1

Participants

6

Reactant 4

HCID 962WaterHCID 79372,6-LutidineHCID 123564tert-Butyldimethylsilyl trifluoromethanesulphonateHCID 59556880tert-butyl 1-((2S)-2-{[(benzyloxy)carbonyl]amino}-1-hydroxypropyl)cyclopropanecarboxylate

Product 1

HCID 59556982HCID 59556982, compoundYield 75%

Reagents, catalysts & solvents 1

HCID 8028TetrahydrofuranSolvent

Procedure

A solution of tert-butyl 1-((2S)-2-{[(benzyloxy)carbonyl]amino}-1-hydroxypropyl)cyclopropanecarboxylate (1.58 g) in THF (15 mL) was cooled to 0° C., tert-butyl(dimethyl)silyl trifluoromethanesulfonate (1.56 mL) and 2,6-dimethylpyridine (1.05 mL) were added, and the mixture was stirred at room temperature for 16 hr. Water was added to the reaction mixture, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate=1/0→1/1) to give the title compound as a colorless oil (yield: 1.57 g, 75%).

Workup

  1. extractionthe mixture was extracted with ethyl acetate
  2. washThe extract was washed with saturated brine
  3. dry with materialdried over anhydrous magnesium sulfate
  4. concentrationconcentrated under reduced pressure
  5. customThe residue was purified by silica gel column chromatography (eluent: hexane/ethyl acetate=1/0→1/1)

Sources & evidence

ORD record
ord-f62cbcfb5f0849d3b2f2fa5bf55a2e12
Source dataset
uspto-grants-2013_04
Patent number
US08420694B2

Reaction notes

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