Sodium Iodide → Acetyloxy-phenylmethyl 5-(N-acetylamino)-3-(N-acetyl-N-methylamino)-2,4,6-triiodobenzenecarboxylate

HRID 1707552Notes

Reaction equation

HRID 1707552 reaction equation
[C:1]1([CH2:7]C(OCCl)=O)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[C:13]([NH:16][C:17]1[C:18]([I:33])=[C:19]([N:28]([C:30](=[O:32])[CH3:31])[CH3:29])[C:20]([I:27])=[C:21]([C:24]([O-:26])=[O:25])[C:22]=1[I:23])(=[O:15])[CH3:14].[Cs+].[I-].[Na+]>CN(C=O)C>[C:13]([NH:16][C:17]1[C:18]([I:33])=[C:19]([N:28]([C:30](=[O:32])[CH3:31])[CH3:29])[C:20]([I:27])=[C:21]([C:24]([O:26][CH:7]([O:26][C:24](=[O:25])[CH3:21])[C:1]2[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=2)=[O:25])[C:22]=1[I:23])(=[O:15])[CH3:14]

Participants

5

Reactant 3

HCID 5238Sodium IodideHCID 11286872Chloromethyl phenylacetateHCID 23675689cesium 5-(N-acetylamino)-3-(N-acetyl-N-methylamino)-2,4,6-triiodobenzenecarboxylate

Product 1

HCID 18961593Acetyloxy-phenylmethyl 5-(N-acetylamino)-3-(N-acetyl-N-methylamino)-2,4,6-triiodobenzenecarboxylate

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent2×

Procedure

Chloromethyl phenylacetate (Neuenschwander, Markus et. al., Helv. Chin. Acta, 61 (1978) 2047) (1.59 g. 8.6 mmol) in dry DMF (20 ml) is added dropwise at 50° C. to a solution of cesium 5-(N-acetylamino)-3-(N-acetyl-N-methylamino)-2,4,6-triiodobenzenecarboxylate (7.28 g, 9.6 mmol) and sodium iodide (64 mg, 0.42 mmol) in dry DMF (100 ml). The precipitate is removed by filtration after stirring for 20 hours and the solvent is removed at reduced pressure. The residue is dissolved in chloroform (200 ml) and washed twice with a saturated sodium hydrogen carbonate solution and twice with water. After drying with magnesium sulfate the solvent is removed at reduced pressure to give the title compound:

Workup

  1. customThe precipitate is removed by filtration
  2. customthe solvent is removed at reduced pressure
  3. dissolutionThe residue is dissolved in chloroform (200 ml)
  4. washwashed twice with a saturated sodium hydrogen carbonate solution and twice with water
  5. dry with materialAfter drying with magnesium sulfate the solvent
  6. customis removed at reduced pressure

Sources & evidence

ORD record
ord-555fa250ebb047cdab157d5cad4bace3
Source dataset
uspto-grants-1994_10
Patent number
US05354549

Reaction notes

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