Identify the MOs that react to form cyclohexene via a Diels-Alder Reaction.
A) LUMO of 1,3-butadiene and HOMO of ethylene
B) LUMO of 1,3-butadiene and LUMO of ethylene
C) HOMO of 1,3-butadiene and HOMO of ethylene
D) HOMO of 1,3-butadiene and LUMO of ethylene

Question

Quizplus · Accepted Answer

In a Diels-Alder reaction, the HOMO of the diene (1,3-butadiene) reacts with the LUMO of the dienophile (ethylene). Therefore, the correct MOs for the reaction are the HOMO of 1,3-butadiene and the LUMO of ethylene. Choice D matches this requirement, making it the best choice.

Identify the MOs That React to Form Cyclohexene Via a Diels-Alder