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  4. Assertion: is 3-carbethoxy- 2-butenoic acid. Reason: Principal functional group gets lowest number followed by double bond or triple bond.

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Q. Assertion : is 3-carbethoxy- 2-butenoic acid.
Reason : Principal functional group gets lowest number followed by double bond or triple bond.Chemistry Question Image

AIIMSAIIMS 2010Organic Chemistry – Some Basic Principles and Techniques

Solution:

Here since $-COOH$ is the principal functional group, it gets the lowest number than the secondary functional group (3-carbethoxy). So it is .3-carbethoxy-2-butenoic acid.

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