The diene which undergoes Diels-Alder reaction with maleic anhydride is: · ABC26OR0571
Subject: Organic Chemistry · Chapter: Pericyclic Reactions · Topic: Cycloaddition Diels Alder · Exam: GATE 2000-2022 · Marks: 2 · Difficulty: Easy
The diene which undergoes Diels-Alder reaction with maleic anhydride is:
(a)
(b)
(c)
(d)
Answer
Answer: A ✓ checked by 4AB · confidence high
The source book printed B; on checking, A is correct — see the explanation.
Explanation
Only 1-vinylcyclohexene (a) can adopt the s-cis diene conformation; the exocyclic methylene diene and the ring-fused dienes are locked s-trans or are not conjugated dienes, so they cannot do Diels–Alder with maleic anhydride.
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