What are the required characteristic features of diene and dienophile that is favorable for a Diels-Alder reaction?
Diene have two double bond that is four pi electrons. Dienes are electron dense. With increasing the + R or + I group in diene, the reaction rate increases.
Dienophile have minimum one double bond that is two pi electrons. With increasing the -I or -R group in dienophile the reaction rate increases.
Diene and dienophile react in six membered cyclic transition state.
Diels-Alder reaction is
Diene + dienophile + heat .................> Diels-Alder cyclic product.
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