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why is Diel Alder reaction faster in water than methanol? What solvent would you choose to...

why is Diel Alder reaction faster in water than methanol? What solvent would you choose to make the kinetics of this reaction even faster?

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Answer #1

1)Diels-Alder reaction involves the addition of diene to dienophile.It is clssified as a pericyclic reaction (cycloaddition)brought about simply by heating i.e.thermally or photochemically. There is less effect of the solvent on the rates of this reaction. However Th e reaction is faster in water than methanol . B.P.. of methanol is 70 o C less than that of the water is 100 oCdeg. .As the reaction is brought about thermally the rate becomes faster in high b.p. solvent.

2) The Diels-Alder reaction is green reaction as it has 100% atom economy. No. side reaction product is formed. Water will be preferred solvent for study the kinetics of the reaction , however the reactants must be soluble in that solvent. DMF will be better solvent for Diels-Alder reaction for water insoluble compounds to study the kinetics of the reaction.

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