oxidation of C=C

• hoay

  30 Jan 18, 22:57

  the oxidation of alkene by hot KMnO4 gives different products depending upon the groups joined to C=C bonds. ethene gives methanal followed by methanoic acid then finally CO2 and H2O.

  What would the products in the following cases.

  (i) CH2=C=CH2

  (ii)  benzene ring joined with 4-memebered carbon (-CH2-CH2-CH2-CH2) or 3-memembered ring( alicyclic) 

   

   

• UltimaOnline

  30 Jan 18, 23:18

  Originally posted by hoay:

  the oxidation of alkene by hot KMnO4 gives different products depending upon the groups joined to C=C bonds. ethene gives methanal followed by methanoic acid then finally CO2 and H2O.

  What would the products in the following cases.

  (i) CH2=C=CH2

  (ii)  benzene ring joined with 4-memebered carbon (-CH2-CH2-CH2-CH2) or 3-memembered ring( alicyclic) 

   

   

  
  With prolonged heating with conc. KMnO4/H+, the final products are

  i) CO2 (3 moles of)

  ii) benzoic acid or phthalic acid respectively

• hoay

  31 Jan 18, 00:00

  https://www.google.com.pk/search?q=cyclohexane+joined+to+benzene&dcr=0&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiGh8S6hoDZAhUQKewKHZFOCDsQ_AUICigB&biw=1242&bih=579#imgrc=uVxVENorm2isDM::

  I am talking about the last compound in the picture ,,,,,,,,,,benzene joined to CYCLOBUTANE ring .............Will it produce the same benzoic acid on oxidation??

• hoay

  31 Jan 18, 00:07

  https://www.google.com.pk/search?q=cyclohexane+joined+to+benzene&dcr=0&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiGh8S6hoDZAhUQKewKHZFOCDsQ_AUICigB&biw=1242&bih=579#imgrc=uVxVENorm2isDM::

  I am talking about the last compound in the picture ,,,,,,,,,,benzene joined to CYCLOBUTANE ring .............Will it produce the same benzoic acid on oxidation??

• UltimaOnline

  31 Jan 18, 01:42

  Originally posted by hoay:

  https://www.google.com.pk/search?q=cyclohexane+joined+to+benzene&dcr=0&source=lnms&tbm=isch&sa=X&ved=0ahUKEwiGh8S6hoDZAhUQKewKHZFOCDsQ_AUICigB&biw=1242&bih=579#imgrc=uVxVENorm2isDM::

  I am talking about the last compound in the picture ,,,,,,,,,,benzene joined to CYCLOBUTANE ring .............Will it produce the same benzoic acid on oxidation??

  
  It will produce phthalic acid.
• hoay

  31 Jan 18, 03:09

  thank you.

   

  one more oxidation query....

   

  In Iodoform test  If an organic compound conatin both the groups then what would be the product of this reaction. such as in CH3-CO-CH(OH)CH3.

• UltimaOnline

  31 Jan 18, 11:16

  Originally posted by hoay:

  thank you.

   

  one more oxidation query....

   

  In Iodoform test  If an organic compound conatin both the groups then what would be the product of this reaction. such as in CH3-CO-CH(OH)CH3.

  
  No prob.

  Ethanedioate ion and (2 mol of) triiodomethane.

• hoay

  4 Feb 18, 03:42

  many thanks.