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(4-????)????????
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(4-????)???????? ??
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- 54-56 °C
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- 325.7±35.0 °C(Predicted)
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- 1.279±0.06 g/cm3(Predicted)
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- sol acetonitrile, dichloromethane, toluene
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- crystals
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- colorless
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(4-Methylphenyl)sulfonyl acetate prepared from Acetyl Chloride and p-Toluenesulfonic Acid[1].Purification Methods
The most likely impurity is p-toluenesulfonic acid (could be up to 10%). This can be removed by dissolving it in dry Et2O and cooling until the anhydride crystallises out. It decomposes on heating; below ~130o it gives the disulfonic anhydride and above ~130o polymers are formed, but it can be distilled in a vacuum if it is free of acid. It is used for cleaving ethers [Prep, IR, NMR: Karger & Mazur J Org Chem 36 528, Karger & Mazur J Org Chem 36 532 1971]. [Beilstein 11 III 255.](4-????)???????? ?? ?? ? ???
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