Which of the following will be oxidized by H I O 4 ? 1 . R - C | | O - C | | O - R 2 . R - C | | O - C H | O H - R 3 . R - C H | O H - C H 2 - C H | O H - R 4 . R - C H | O H - C H | O H - R Select the correct answer using the codes below

Step-by-step solution

The net result of oxidation is the cleavage of the bond between C's with the attached O's with addition of OH to 'C' of each C - O . In 1, 2-diols, the net effect is the oxidation is the cleavage of bond and attachment of an OH to each 'C' atom. The gem-diol so formed loses a molecule of H 2 O . 1 . R - C | | O - C | | O - R → H I O 4 R - C | | O - O H + H O - C | | O - R 2 . R - C | | O - C H | O H - R → H I O 4 R - C | | O - O H + O = C H - R 4 . R - C H | O H - C H | O H - R → H I O 4 R - C H = O + O = H C R