Potassium Carbonate → N-benzyloxy-3-chloropropylsulfonamide

HRID 352028Notes

Reaction equation

HRID 352028 reaction equation
[Cl:1][CH2:2][CH2:3][CH2:4][S:5](Cl)(=[O:7])=[O:6].Cl.[CH2:10]([O:17][NH2:18])[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1.C(=O)([O-])[O-].[K+].[K+]>CCOCC.O.S([O-])([O-])(=O)=O.C([N+](CCCC)(CCCC)CCCC)CCC.C([N+](CCCC)(CCCC)CCCC)CCC>[CH2:10]([O:17][NH:18][S:5]([CH2:4][CH2:3][CH2:2][Cl:1])(=[O:7])=[O:6])[C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][CH:12]=1

Participants

7

Reactant 3

HCID 11430Potassium CarbonateHCID 154103-Chloropropanesulphonyl chlorideHCID 102312Benzyloxyamine hydrochloride

Product 1

HCID 10539517N-benzyloxy-3-chloropropylsulfonamideYield 41%

Reagents, catalysts & solvents 3

HCID 11433187Bis(tetrabutylammonium) sulphateCatalystHCID 962WaterSolventHCID 3283Diethyl EtherSolvent

Procedure

3-Chloropropylsulfonyl chloride 1 (30.28 g, 0.17 mol), O-benzylhydroxylamine hydrochloride (27.3 g, 0.17 mol), potassium carbonate (50 g, 0.36 mol) and tetrabutylammonium sulfate (about 500 mg) are reacted in a mixture of ether (1L) and water (100 ml) for 24 hours at room temperature and the reaction mixture was extracted with ethyl acetate. The extract was subjected to column chromatography on silica gel. From the fraction eluted with a mixture of ethyl acetate/n-hexane (1:4), 18.4 g (41%) of crude N-benzyloxy-3-chloropropylsulfonamide (intermediate 3g) was obtained as a pale yellow oil.

Workup

  1. extractionthe reaction mixture was extracted with ethyl acetate
  2. washFrom the fraction eluted with a mixture of ethyl acetate/n-hexane (1:4)

Sources & evidence

ORD record
ord-3f4326de7d1544b28dd973ec142d780a
Source dataset
uspto-grants-2004_06
Patent number
US06743923B2

Reaction notes

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