The IUPAC name of above structure is:

prop-2-enoic acid

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but-1-enoic acid

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but-3-enoic acid

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pen-4-enoic acid

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Solution

The correct option is C but-3-enoic acid
According to IUPAC convention, carboxylic acid group has more priority than alkene or saturated carbon.
So, the correct name is: $b u t - 3 - e n o i c$ acid.

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Similar questions

How will you convert ethanal into the following compounds ?

Butane - 1, 3 - diol

But - 2 - enal

But - 2 - enoic acid

How will you convert ethanal into the following compounds?

(i) Butane-1, 3-diol (ii) But-2-enal (iii) But-2-enoic acid

3-ethynyl-2-hydroxy-4-methylhex-3-en-5-ynoic

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