Please describe what happens in the conversion, using the following terms: repul

Question

Please describe what happens in the conversion, using the following terms: repulsion, strict interaction rotation and delocalization.

3) A possible mechanism for the conversion of maleic acid to fumaric acid is given below: OH OH OH HO. Ho Ho HO "The conversion of maleic acid to fumaric acid is acid-catalyzed with hydrochloric acid. The first step is a simple acid base reaction with the carbonyl oxygen and a proton. The proton is shown as a "bare" proton, but in reality, the proton would be solvated with water. After the positive charge is formed on the oxygen atom it can then be delocalized throughout the conjugated system." (Continue this paragraph and explain how and why fumaric acid is formed, correctly use each of the following terms in your answer repulsion, steric interaction, rotation and delocalization.)

Explanation / Answer

First step in this reaction is the addition of bare proton H+ to the Carbonyl oxygen of the carboxylic acid of the maleic acid. Now second step is after the positive charge is formed, that is in Conjugation with the double bond. so it can be delocalised through out the conjugated system. After the delocalisation step the nest step is the free rotation of C-C single bond that minimises the steric interaction/repulsion between the carboxyl group and yield the trans form. Now on the next step the lone pair of oxygen is delocalising back to the system. And finally in the last step is deprotonation and which results the Fumaric acid back.

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