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Destroyer Ochem#14/15/16

Discussion in 'DAT Discussions' started by Daniel2008, Jul 23, 2011.

  1. Daniel2008

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    Hey so for

    no.14 I'm confused as to how to distinguish from choice c and d. H2/Pt changes -NO2 to -NH2 but doesn't H3O+:OH- do that also?

    no.15
    After K2Cr2O7 oxidizes cyclohexanol I'm not sure to go about converting it to the final product...what exactly occurs with choice b and c?

    no.16

    again the K2Cr2O7 is oxidizing the alcohol to the ketone form, and I'm unsure of how excess I2 and OH- affect the molecule.

    --Ochem is a weak point for me, and I'm just starting question review.All help's appreciated!
     
  2. Bis-GMA111

    7+ Year Member

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    To my knowledge, only Sn/HCl and H2/Pt convert NO2-->NH2 but i could be wrong
     
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  3. OP
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    Daniel2008

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    thanks! I'm having trouble remembering what reagents do...there are so many!!
     
  4. wired202808

    wired202808 Membership Revoked
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    use the roadmaps in the destroyer for clarity
     
  5. rpatel8

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    For 15, you simple make the ketone and then it is a wittig reaction.

    For 16, you make the ketone and the I2/OH- is a haloform reaction. You can look at the mechanism online but it will form a carboxylate which is then protonated by the H3O+ to form the carboxylic acid.
     

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