Triethylamine → 4-Nitrophenyl 3-[4-(2,2-difluoroethyl)phenyl]-5-[3-(2-methoxyethyl)-1,2,4-oxadiazol-5-yl]piperidine-1-carboxylate

HRID 2091783Notes

Reaction equation

HRID 2091783 reaction equation
[F:1][CH:2]([F:25])[CH2:3][C:4]1[CH:9]=[CH:8][C:7]([CH:10]2[CH2:15][CH:14]([C:16]3[O:20][N:19]=[C:18]([CH2:21][CH2:22][O:23][CH3:24])[N:17]=3)[CH2:13][NH:12][CH2:11]2)=[CH:6][CH:5]=1.C(N(CC)CC)C.Cl[C:34]([O:36][C:37]1[CH:42]=[CH:41][C:40]([N+:43]([O-:45])=[O:44])=[CH:39][CH:38]=1)=[O:35]>ClCCl>[F:25][CH:2]([F:1])[CH2:3][C:4]1[CH:9]=[CH:8][C:7]([CH:10]2[CH2:15][CH:14]([C:16]3[O:20][N:19]=[C:18]([CH2:21][CH2:22][O:23][CH3:24])[N:17]=3)[CH2:13][N:12]([C:34]([O:36][C:37]3[CH:38]=[CH:39][C:40]([N+:43]([O-:45])=[O:44])=[CH:41][CH:42]=3)=[O:35])[CH2:11]2)=[CH:6][CH:5]=1

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 821294-Nitrophenyl chloroformateHCID 596065913-[4-(2,2-Difluoroethyl)phenyl]-5-[3-(2-methoxyethyl)-1,2,4-oxadiazol-5-yl]piperidine

Product 1

HCID 596065764-Nitrophenyl 3-[4-(2,2-difluoroethyl)phenyl]-5-[3-(2-methoxyethyl)-1,2,4-oxadiazol-5-yl]piperidine-1-carboxylate

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

A solution of 36.3 mg (0.061 mmol, purity 70%) of the compound from Example 61A in dichloromethane (2.0 ml) was admixed with 0.03 ml (21.6 mg, 0.21 mmol) of triethylamine and then 12.3 mg (0.061 mmol) of 4-nitrophenyl chloroformate were added at RT. The mixture was stirred at RT for 2 h and then the reaction solution was washed with saturated aqueous sodium hydrogencarbonate solution and water, and the organic phase was dried over magnesium sulphate, filtered and concentrated under reduced pressure. Yield: 56.2 mg (91% of theory, purity 60%)

Workup

  1. washthe reaction solution was washed with saturated aqueous sodium hydrogencarbonate solution and water
  2. dry with materialthe organic phase was dried over magnesium sulphate
  3. filtrationfiltered
  4. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-02fec6dbb8784087a9f34eacc1962c2e
Source dataset
uspto-grants-2013_05
Patent number
US08440657B2

Reaction notes

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