Question

Which compound below cannot act as a diene in a Diels Alder reaction?

HN CN II III IV V

Answer 1

"The diene that reaction cis conformation around the double bond have two Socis conformation where both the may can be used in Diels- Alder conformations around the single bondo One bonds both the double are in other me bonds and the conformation where both the double the single bondo Among these So trans are in s-trans conformation around two conformations Only undergoes Diels-Alder reaction. This is of perfect allignment of the orbitals and Stability of the product formede Satrans conformation of diene does undergo Diels-Alder reaction. see which diene has which conformation Only sacis conformation because of feasibility not Now let HN (s-cis conformation) S-trans (bond rotation around single bond is restricted) D CN CN bond rotation dor socis s-cis socis Iv Strands ♡ a diene in Diels-Alder The compound that cannot act as reaction → 1. =