Phosphate → 3-(Hydroxymethyl)-N,N-bis{[2-(trimethylsilyl)ethoxy]methyl}benzenesulfonamide

HRID 2116953Notes

Reaction equation

HRID 2116953 reaction equation
[OH:1][CH2:2][C:3]1[CH:4]=[C:5]([S:9]([NH2:12])(=[O:11])=[O:10])[CH:6]=[CH:7][CH:8]=1.[H-].[Na+].[CH3:15][Si:16]([CH3:23])([CH3:22])[CH2:17][CH2:18][O:19][CH2:20]Cl.P([O-])([O-])([O-])=O>CN(C=O)C>[OH:1][CH2:2][C:3]1[CH:4]=[C:5]([S:9]([N:12]([CH2:20][O:19][CH2:18][CH2:17][Si:16]([CH3:23])([CH3:22])[CH3:15])[CH2:20][O:19][CH2:18][CH2:17][Si:16]([CH3:23])([CH3:22])[CH3:15])(=[O:10])=[O:11])[CH:6]=[CH:7][CH:8]=1

Participants

6

Reactant 4

HCID 1061PhosphateHCID 24758Sodium hydrideHCID 27242712-Chloromethyl 2-(trimethylsilyl)ethyl etherHCID 231337993-(Hydroxymethyl)benzene-1-sulfonamide

Product 1

HCID 468348293-(Hydroxymethyl)-N,N-bis{[2-(trimethylsilyl)ethoxy]methyl}benzenesulfonamide

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Procedure

A solution of 3-(hydroxymethyl)benzenesulfonamide (670 mg) in DMF (20 ml) under nitrogen was treated with sodium hydride (315 mg, 60% in oil) and the mixture was stirred at 20° for 15 min. The mixture was then treated with 2-(trimethylsilyl)ethoxymethyl chloride (1.27 ml) and the mixture was stirred at 20° for 1 h. Phosphate buffer solution (50 ml, pH6.5) was added and the mixture was extracted with EtOAc. The extract was washed with water, dried (Na2SO4) and the solvent evaporated in vacuo to give a residue. The residue was purified by chromatography on flash silica gel (40 mm diameter column). Elution with EtOAc-cyclohexane (3:7) gave the title compound (985 mg). LCMS RT=3.84 min.

Workup

  1. stirringthe mixture was stirred at 20° for 1 h
  2. extractionthe mixture was extracted with EtOAc
  3. washThe extract was washed with water
  4. dry with materialdried (Na2SO4)
  5. customthe solvent evaporated in vacuo
  6. customto give a residue
  7. customThe residue was purified by chromatography on flash silica gel (40 mm diameter column)
  8. washElution with EtOAc-cyclohexane (3:7)

Sources & evidence

ORD record
ord-8378be7cfcba4e8296271e60d7b2a985
Source dataset
uspto-grants-2008_10
Patent number
US07439393B2

Reaction notes

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