The number of compound(s) which undergo tautomerism to form anti-aromatic compound is/are :
A
1
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B
2
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C
3
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D
4
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Solution
The correct option is A 1 Compounds (a), (d) and (f) when undergo tautomerism form compounds which are aromatic as shown :
Compounds (b) and (c) also undergo tautomerism, but they form non-aromatic and anti-aromatic products respectively as shown.