Doubt in organic chemistry

please explain with mechanism

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very dangerous question… im still thinking about another approach

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Beta Gamma unsaturated acid undergo decarboxylation on heating. Why we are not considering that here?

Considering that these should be the product.

Ye alkene rearrangement wala pehli baar dekha, will keep it in mind from next time. @Gauri :grin::pray:

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exactly, if I had not seen the solution I would have done this only… I think there might be an error… alkene rearrangement exists but your mechanism is much more probable.

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Not even in the options :joy::joy:

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