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why does b.v. oxidation of 1,2 diketones give anhydrides????
THIS ANSWER CAN ONLY BE EXPLAINED BY MECHANISM. I CAN'T TYPE THE MECH. BUT STILL GIVING U SOME SUGGESTION. START THE NORMAL MECH. PROCEDURE OF B.V REACTION i.e. PROTONATE ONE CARBONYL GR. THEN ATTACK THAT BY NUCLEOPHILIC CENTRE OF PER-ACID.PROCEED UPTO REMOVAL OF -HCOOH.*NOW DO CHARGE SEPARATIONOF THE OTHER CARBONYL GR.--FORM THE EPOXY COMPOUND. NOW BREAK C-C BOND DUE TO FORMATION OF -CO FROM -COH. i THINK NOW U CAN DO THE REST. *FROM HERE ONWARDS THIS MECH. CHANGES FROM THOSE ROUTINE ONE. THIS IS A GOOD MECH. INTERESTING ONE.
THIS ANSWER CAN ONLY BE EXPLAINED BY MECHANISM. I CAN'T TYPE THE MECH. BUT STILL GIVING U SOME SUGGESTION.
START THE NORMAL MECH. PROCEDURE OF B.V REACTION i.e. PROTONATE ONE CARBONYL GR. THEN ATTACK THAT BY NUCLEOPHILIC CENTRE OF PER-ACID.PROCEED UPTO REMOVAL OF -HCOOH.*NOW DO CHARGE SEPARATIONOF THE OTHER CARBONYL GR.--FORM THE EPOXY COMPOUND. NOW BREAK C-C BOND DUE TO FORMATION OF -CO FROM -COH. i THINK NOW U CAN DO THE REST.
*FROM HERE ONWARDS THIS MECH. CHANGES FROM THOSE ROUTINE ONE.
THIS IS A GOOD MECH. INTERESTING ONE.
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