Triethylamine → (4R)-4-Methyl-4-[2-(1-methyl-1H-pyrrol-2-yl)ethyl]-1,3-oxazolidin-2-one

HRID 604550Notes

Reaction equation

HRID 604550 reaction equation
[NH2:1][C@:2]([CH3:13])([CH2:5][CH2:6][C:7]1[N:8]([CH3:12])[CH:9]=[CH:10][CH:11]=1)[CH2:3][OH:4].[C:14](OC(OC(C)(C)C)=O)(OC(C)(C)C)=[O:15].C(N(CC)CC)C>C(Cl)Cl.CN(C)C1C=CN=CC=1>[CH3:13][C@@:2]1([CH2:5][CH2:6][C:7]2[N:8]([CH3:12])[CH:9]=[CH:10][CH:11]=2)[CH2:3][O:4][C:14](=[O:15])[NH:1]1

Participants

6

Reactant 3

HCID 8471TriethylamineHCID 90495Di-tert-butyl dicarbonateHCID 66672978HCID 66672978, compound

Product 1

HCID 18448138(4R)-4-Methyl-4-[2-(1-methyl-1H-pyrrol-2-yl)ethyl]-1,3-oxazolidin-2-oneYield 53.1%

Reagents, catalysts & solvents 2

HCID 142844-(Dimethylamino)pyridineCatalystHCID 6344DichloromethaneSolvent

Procedure

The obtained (2R)-2-amino-2-methyl-4-(1-methylpyrrol-2-yl)butan-1-ol 1/2 D-(−)-tartrate (41.4 mg, 0.16 mmol) was suspended in methylene chloride (1.6 mL) and di-t-butyl dicarbonate (0.176 g, 0.810 mmol), triethylamine (0.225 mL, 1.62 mmol) and 4-dimethylaminopyridine (2.0 mg, 0.016 mmol) were added thereto, followed by stirring of the mixture at room temperature for 30 minutes. The solvent was evaporated under reduced pressure and the residue was purified by silica gel chromatography (hexane:ethyl acetate 3:2-2:1) to obtain (4R)-4-methyl-4-[2-(1-methylpyrrol-2-yl)ethyl]-1,3-oxazolidin-2-one (17.7 mg, yield: 53%).

Workup

  1. customThe solvent was evaporated under reduced pressure
  2. customthe residue was purified by silica gel chromatography (hexane:ethyl acetate 3:2-2:1)

Sources & evidence

ORD record
ord-cbabe87644a34bde879b34c0057bbe41
Source dataset
uspto-grants-2011_03
Patent number
US07910617B2

Reaction notes

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