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Write the names of the following: (i) ...

Write the names of the following:
(i) `CH_(3)CH_(2) - C -= CH`
(ii) `CH_(3) CH_(2) OH`
(iii) `CH_(3)COCH_(3)`.

A

`igt iii gt ii`

B

`igt ii gtiii`

C

`ii gt igt iii`

D

`iii gt igt ii`

Text Solution

Verified by Experts

The correct Answer is:
C
In active methylene compound (ii), methylene `(-CH_(2))` group exists in between two strong EWGs i.e. `(CH_(3)CO-)`,
which increases the acidity. Esters (iii) are less acidic than ketones (i) because the enolate ion produced from an ester is less stable than that produced from a ketone.
Hence,
`CH_(3)-overset(O)overset("||")C-underset("(ii)")(CH_(2))-overset(O)overset("||")C-CH_(3) gt CH_(3)-overset(O)overset("||")C-underset("(i)")(CH_(2))-overset(O)overset("||")C-OC_(2)H_(5)gtC_(2)H_(5)O-overset(O)overset("||")C-underset("(iii)")(CH_(2))-overset(O)overset("||")C-O-C_(2)H_(5)`
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