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Sodium Iodide → 1-Phthalimido-4-p-toluenesulfonyl-6,6-difluoro-8-benzyloxy-4-aza-octane

HRID 2309599
Notes
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Reaction equation

HRID 2309599 reaction equation
[CH2:1]([O:8][CH2:9][CH2:10][C:11]([F:25])([F:24])[CH2:12][NH:13][S:14]([C:17]1[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=1)(=[O:16])=[O:15])[C:2]1[CH:7]=[CH:6][CH:5]=[CH:4][CH:3]=1.[K].CC(C)([O-])C.Br[CH2:33][CH2:34][CH2:35][N:36]1[C:40](=[O:41])[C:39]2=[CH:42][CH:43]=[CH:44][CH:45]=[C:38]2[C:37]1=[O:46].[I-].[Na+]>CN(C=O)C.[Cl-].[Na+].O>[C:37]1(=[O:46])[N:36]([CH2:35][CH2:34][CH2:33][N:13]([S:14]([C:17]2[CH:22]=[CH:21][C:20]([CH3:23])=[CH:19][CH:18]=2)(=[O:16])=[O:15])[CH2:12][C:11]([F:25])([F:24])[CH2:10][CH2:9][O:8][CH2:1][C:2]2[CH:3]=[CH:4][CH:5]=[CH:6][CH:7]=2)[C:40](=[O:41])[C:39]2=[CH:42][CH:43]=[CH:44][CH:45]=[C:38]12
ParticipantsProcedureWorkupSources & evidenceReaction notes

Participants

7

Reactant 4

HCID 5238Sodium IodideHCID 21611N-3-BromopropylphthalimideHCID 19860703N-(4-benzyloxy-2,2-difluorobutyl)-p-toluenesulfonamideHCID 50987170Potassium tertbutoxide

Product 1

HCID 198607071-Phthalimido-4-p-toluenesulfonyl-6,6-difluoro-8-benzyloxy-4-aza-octane

Reagents, catalysts & solvents 2

HCID 6228
Dimethylformamide
Solvent
HCID 57417360Sodium chloride; waterSolvent

Procedure

To a solution of N-(4-benzyloxy-2,2-difluorobutyl)-p-toluenesulfonamide (7.0 g, 19 mM) in dry DMF (20 mL), is added potassium-tert.-butoxide (2.34 g, 21 mmoles), and the mixture is stirred for 30 minutes. To this mixture are added N-3-bromopropyl-phthalimide (5.1 g, 19 mmoles) and sodium iodide (0.33 g), and the entire mixture is then stirred overnight under nitrogen at room temperature. Following the addition of brine, the mixture is extracted with ether, washed with 1N HCl (twice), then with brine (twice), and dried over Na2SO4. Evaporation of the solvent yields 1-phthalimido-4-p-toluenesulfonyl-6,6-difluoro-8-benzyloxy-4-aza-octane as an oil, which crystallizes on scratching with ether/petroleum ether to form white crystals: 9.5 g (90%).

Workup

  1. stirringthe entire mixture is then stirred overnight under nitrogen at room temperature
  2. extractionthe mixture is extracted with ether
  3. washwashed with 1N HCl (twice), then with brine (twice), and
  4. dry with materialdried over Na2SO4
  5. customEvaporation of the solvent

Sources & evidence

ORD record
ord-fe380d672ca64d418aeab0ecfdbac6e1
Source dataset
uspto-grants-1987_09
DOI
10.6084/m9.figshare.5104873.v1
Patent number
US04695654

Reaction notes

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On this pageParticipantsProcedureWorkupSources & evidenceReaction notes