It is said that the Diels-Alder reaction is a syn-addition with respect to both the dienophile and the diene. Is there a reason for that!?


1 Answer 1



Of course there is a reason.

HOMO of dien and LUMO of dienophile

Interaction of these HOMO and LUMO is only possible as in the image, in a certain alignment which results in syn addition product.


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