Triethylamine → HCID 66758691, compound

HRID 556991Notes

Reaction equation

HRID 556991 reaction equation
[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([NH:14][CH:15]([CH2:18][C:19]2[CH:24]=[CH:23][C:22]([Cl:25])=[CH:21][CH:20]=2)[CH2:16][OH:17])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:3])[CH3:2].C(N(CC)CC)C.[C:33](C1NC=CN=1)(C1NC=CN=1)=[O:34]>C(Cl)Cl>[C:1]([O:5][C:6]([N:8]1[CH2:13][CH2:12][CH:11]([N:14]2[CH:15]([CH2:18][C:19]3[CH:20]=[CH:21][C:22]([Cl:25])=[CH:23][CH:24]=3)[CH2:16][O:17][C:33]2=[O:34])[CH2:10][CH2:9]1)=[O:7])([CH3:4])([CH3:2])[CH3:3]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 5250894Bis-(1H-imidazol-2-YL)-methanoneHCID 66757584HCID 66757584, compound

Product 1

HCID 66758691HCID 66758691, compoundYield 80%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

4-[1-(4-Chloro-benzyl)-2-hydroxy-ethylamino]-piperidine-1-carboxylic acid tert-butyl ester, the intermediate alcohol was dissolved in 15 mL of methylene chloride. Triethylamine (0.423 g, 0.00418 mol, 583 uL 1.2 equiv) was added followed by portionwise addition of carbonyl diimidazole (0.68 g, 0.00418 mol, 1.2 equiv). The mixture was stirred at room temperature and then quenched with water (15 mL). The organic layers were separated and the remaining aqueous layer was extracted with methylene chloride (3×15 mL). The combined organics were dried over magnesium sulfate, filtered and concentrated in vacuo to afford a yellow solid. The crude oil was purified by silica gel chromatography (methylene chloride to 10% methanol in methylene chloride gradient) to afford 4-[4-(4-chloro-benzyl)-2-oxo-oxazolidin-3-yl]-piperidine-1-carboxylic acid tert-butyl ester as a white solid (1.1 g, 80%).

Workup

  1. customquenched with water (15 mL)
  2. customThe organic layers were separated
  3. extractionthe remaining aqueous layer was extracted with methylene chloride (3×15 mL)
  4. dry with materialThe combined organics were dried over magnesium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated in vacuo
  7. customto afford a yellow solid
  8. customThe crude oil was purified by silica gel chromatography (methylene chloride to 10% methanol in methylene chloride gradient)

Sources & evidence

ORD record
ord-74a55bd80c24414cb8a10a47de59639e
Source dataset
uspto-grants-2011_11
Patent number
US08058287B2

Reaction notes

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