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m-Chloroperbenzoic acid → 8-[4-(2-butoxyethoxy)phenyl]-1-isobutyl-N-[3-methyl-4-[[[1-propylimidazol-5-yl)methyl]sulfinyl]phenyl]-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxamide

HRID 402246
Notes
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Reaction equation

HRID 402246 reaction equation
[CH2:1]([O:5][CH2:6][CH2:7][O:8][C:9]1[CH:14]=[CH:13][C:12]([C:15]2[CH:16]=[CH:17][C:18]3[N:25]([CH2:26][CH:27]([CH3:29])[CH3:28])[CH2:24][CH2:23][CH2:22][C:21]([C:30]([NH:32][C:33]4[CH:38]=[CH:37][C:36]([S:39][CH2:40][C:41]5[N:45]([CH2:46][CH2:47][CH3:48])[CH:44]=[N:43][CH:42]=5)=[C:35]([CH3:49])[CH:34]=4)=[O:31])=[CH:20][C:19]=3[CH:50]=2)=[CH:11][CH:10]=1)[CH2:2][CH2:3][CH3:4].ClC1C=CC=C(C(OO)=[O:59])C=1>ClCCl>[CH2:1]([O:5][CH2:6][CH2:7][O:8][C:9]1[CH:10]=[CH:11][C:12]([C:15]2[CH:16]=[CH:17][C:18]3[N:25]([CH2:26][CH:27]([CH3:28])[CH3:29])[CH2:24][CH2:23][CH2:22][C:21]([C:30]([NH:32][C:33]4[CH:38]=[CH:37][C:36]([S:39]([CH2:40][C:41]5[N:45]([CH2:46][CH2:47][CH3:48])[CH:44]=[N:43][CH:42]=5)=[O:59])=[C:35]([CH3:49])[CH:34]=4)=[O:31])=[CH:20][C:19]=3[CH:50]=2)=[CH:13][CH:14]=1)[CH2:2][CH2:3][CH3:4]
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

4

Reactant 2

HCID 70297m-Chloroperbenzoic acidHCID 686500438-[4-(2-butoxyethoxy)phenyl]-1-isobutyl-N-[3-methyl-4-[[[1-propylimidazol-5-yl]methyl]sulfanyl]phenyl]-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxamide

Product 1

HCID 686501418-[4-(2-butoxyethoxy)phenyl]-1-isobutyl-N-[3-methyl-4-[[[1-propylimidazol-5-yl)methyl]sulfinyl]phenyl]-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxamideYield 76.4%

Reagents, catalysts & solvents 1

HCID 6344
Dichloromethane
Solvent
2×

Procedure

To a solution of 8-[4-(2-butoxyethoxy)phenyl]-1-isobutyl-N-[3-methyl-4-[[[1-propylimidazol-5-yl]methyl]sulfanyl]phenyl]-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxamide (370 mg) in dichloromethane (10 ml) was added dropwise a 70% solution of 3-chloro-per-benzoic acid (144 mg) in dichloromethane (10 ml) at −78° C. After stirring as such for 1 hour, the dry ice-acetone bath was removed, and an aqueous sodium thiosulfate solution was added with vigorous stirring. The mixture was returned to room temperature and stirred for 30 minutes, after which water was added and the mixture was extracted with ethyl acetate. The organic layer was washed with aqueous saturated sodium bicarbonate solution and saturated brine, and was dried with magnesium sulfate. The solvent was distilled off under reduced pressure, and the resulting residue was separated and purified with basic silica gel column chromatography (ethyl acetate→methanol: ethyl acetate=1:40) and recrystallized from hexane-ethyl acetate to give 8-[4-(2-butoxyethoxy)phenyl]-1-isobutyl-N-[3-methyl-4-[[[1-propylimidazol-5-yl]methyl]sulfinyl]phenyl]-1,2,3,4-tetrahydro-1-benzoazocine-5-carboxamide (289 mg) as yellow crystals (Compound 39).

Workup

  1. customthe dry ice-acetone bath was removed
  2. additionan aqueous sodium thiosulfate solution was added with vigorous stirring
  3. customwas returned to room temperature
  4. stirringstirred for 30 minutes
  5. additionafter which water was added
  6. extractionthe mixture was extracted with ethyl acetate
  7. washThe organic layer was washed with aqueous saturated sodium bicarbonate solution and saturated brine
  8. dry with materialwas dried with magnesium sulfate
  9. distillationThe solvent was distilled off under reduced pressure
  10. customthe resulting residue was separated
  11. custompurified with basic silica gel column chromatography (ethyl acetate→methanol: ethyl acetate=1:40)
  12. customrecrystallized from hexane-ethyl acetate

Sources & evidence

ORD record
ord-05e8863c9009411abe6c179e686287ff
Source dataset
uspto-grants-2014_06
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US08741943B2

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes