Triethylamine → HCID 86590889, compound

HRID 891822Notes

Reaction equation

HRID 891822 reaction equation
[OH:1][CH:2]1[CH2:5][N:4]([C:6]2[O:7][CH:8]=[C:9]([C:11](=[O:31])[NH:12][C@H:13]3[CH2:17][CH2:16][N:15]([C:18]([O:20][CH2:21][C:22]4[CH:27]=[CH:26][C:25]([N+:28]([O-:30])=[O:29])=[CH:24][CH:23]=4)=[O:19])[CH2:14]3)[N:10]=2)[CH2:3]1.[CH3:32][S:33](Cl)(=[O:35])=[O:34].C(N(CC)CC)C>C(Cl)Cl>[CH3:32][S:33]([O:1][CH:2]1[CH2:3][N:4]([C:6]2[O:7][CH:8]=[C:9]([C:11](=[O:31])[NH:12][C@H:13]3[CH2:17][CH2:16][N:15]([C:18]([O:20][CH2:21][C:22]4[CH:27]=[CH:26][C:25]([N+:28]([O-:30])=[O:29])=[CH:24][CH:23]=4)=[O:19])[CH2:14]3)[N:10]=2)[CH2:5]1)(=[O:35])=[O:34]

Participants

5

Reactant 3

HCID 8471TriethylamineHCID 31297Methanesulfonyl chlorideHCID 69544129HCID 69544129, compound

Product 1

HCID 86590889HCID 86590889, compoundYield 95%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 3-hydroxy-1-{4-[(3S)-1-(p-nitrobenzyloxycarbonyl)pyrrolidin-3-ylcarbamoyl]-1,3-oxazol-2-yl}azetidine (680 mg, 1.58 mmol) (obtained as described in Reference Example 76(2)) in methylene chloride (34 ml) were added methanesulfonyl chloride (366 μl, 4.73 mmol) and triethylamine (663 μl, 4.73 mmol) in an ice bath and the mixture was stirred for 10 minutes and at room temperature for 2 hours. After checking the completion of the reaction, the mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate. The organic layer was washed with saturated aqueous sodium chloride solution, dried over anhydrous sodium sulfate, filtered and concentrated under reduced pressure. The residue was purified by chromatography on a silica gel column using ethyl acetate→ethyl acetate:methanol (96:4) as the eluant to afford 3-methanesulfonyloxy-1-{4-[(3S)-1-(p-nitrobenzyloxycarbonyl)pyrrolidin-3-ylcarbamoyl]-1,3-oxazol-2-yl}azetidine (760 mg, yield 95%) as a pale yellow solid.

Workup

  1. customthe completion of the reaction
  2. customthe mixture was partitioned between ethyl acetate and saturated aqueous sodium hydrogencarbonate
  3. washThe organic layer was washed with saturated aqueous sodium chloride solution
  4. dry with materialdried over anhydrous sodium sulfate
  5. filtrationfiltered
  6. concentrationconcentrated under reduced pressure
  7. customThe residue was purified by chromatography on a silica gel column

Sources & evidence

ORD record
ord-8f5fedd11b25439f9213be3422825013
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

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