Experiment 9: Preparation of Methyl Salicyclate

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Experiment 9 Preparation of Methyl Salicyclate
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H2SO4
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Experimental setup total reflux
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(No Transcript)
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• How do I go about figuring out what my unknown
  is?
• From your solubility measurements, you should be
  able to classify your unknowns according to the
  solubility classes discussed.
• Look up some reference IR spectra in your manual
  that have the possible functional groups present
  in your unknown.
• Look up some possible classification tests you
  can run to confirm their presence.
• Complete and hand in your preliminary report if
  you havent done so.
• Select a possible derivative based on the
  properties of the derivative. For example, choose
  a derivative that will allow you to distinguish
  between other possible compounds with melting
  points (5 C) or boiling points (10 C) within
  the value of your unknown

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Classification Tests Classification test should
only be run to confirm your suspicions regarding
the presence of a functional group suggested by
your solubility tests or IR. Always run a blank
and a known at the same time you run your unknown
so that you know what a positive test looks like
and that you performed the classification test
properly. Derivatives A derivative should be
chosen whose melting temperature will allow you
to differentiate between possible compounds. If
you have a carboxylic acid or an amine, a
titration can be substituted for a derivative
providing that the molecular weights of other
possible compounds in your possibility list can
be excluded on the basis of your titration
results.
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What information can we deduce from this spectrum?
neat liquid
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What information can we deduce from this spectrum?
KBr disk
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neat liquid