MolSynapsequestion bank

MolSynapse / Question bank / Hydrocarbons / Conjugated dienes and Diels-Alder reaction

NEET levelSingle correct optionDifficulty 1 of 3hc187

The Diels-Alder reaction between a conjugated diene and an alkene is classified as a:

A $[2 + 2]$ cycloaddition
B $[4 + 2]$ cycloaddition
C $[3 + 2]$ cycloaddition
DElectrophilic substitution

Answer: B

The diene supplies 4 pi electrons and the dienophile 2 pi electrons in one concerted step, forming a six-membered ring. This is a

[4 + 2]

cycloaddition.

Practice Hydrocarbons More on Conjugated dienes and Diels-Alder reaction

Previous questionNext question

More questions on Conjugated dienes and Diels-Alder reaction