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Synthesis reaction: turn 4-octyne into butanal

  1. Nov 25, 2012 #1
    aldehyderxn.jpg

    I know that first we have to add H2 and a Lindlar catalyst in order to produce what is the reactant.
    I thought adding O3 would be an ozonolysis reaction.
    An ozonolysis reaction should yield this:

    ozonolysisreaction.png

    I don't know why they added the Zn and CH3CO2H, though.

    What does this even do in the reaction?

    Thanks for your help! :)
     
  2. jcsd
  3. Nov 27, 2012 #2

    chemisttree

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    What is the structure of the first-formed product of the double bond with ozone and what is the mechanism of the reaction?
     
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