Triethylamine → HCID 86590891, compound

HRID 891825Notes

Reaction equation

HRID 891825 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 69543973HCID 69543973, compound

Product 1

HCID 86590891HCID 86590891, compoundYield 92.4%

Reagents, catalysts & solvents 1

HCID 6344DichloromethaneSolvent

Procedure

To a solution of 3-hydroxy-1-{4-[(3R)-1-(p-nitrobenzyloxycarbonyl)-pyrrolidin-3-ylcarbamoyl]-1,3-oxazol-2-yl}azetidine (500 mg, 1.16 mmol) (obtained as described in Reference Example 77(2)) in methylene chloride (25 ml) were added methanesulfonyl chloride (269 μl, 3.48 mmol) and triethylamine (488 μl, 3.48 mmol) in an ice bath and the mixture was stirred for 10 minutes and then at room temperature for 3 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-[(3R)-1-(p-nitrobenzyloxycarbonyl)pyrrolidin-3-ylcarbamoyl]-1,3-oxazol-2-yl}azetidine (546 mg, yield 92%) as a pale yellow solid.

Workup

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

Sources & evidence

ORD record
ord-ff4a01a9a07448408e24f32d8c87efa1
Source dataset
uspto-grants-2006_02
Patent number
US07001897B2

Reaction notes

Loading…