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Draw and explain the mechanism for the synthesis of dimethylmaleate (using Maleic anhydride, methyl alcohol and...

Draw and explain the mechanism for the synthesis of dimethylmaleate (using Maleic anhydride, methyl alcohol and sulfuric acid as the catalyst).

Draw and explain the reaction mechanism for halogen-catalyzed cis-trans isomerization of dimethylmaleate.

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