The correct order of decreasing stability of | vedclass

Name: Exam Paper Generator | JEE NEET Paper Generator | Vedclass
Brand: Vedclass
Rating: 5 (35 reviews)

Question

(A) The stability of the given carbocations is determined by electronic effects:$I.$ $CH_3-CH^{+}-CH_3$: The carbocation is stabilized by the $+I$ eff

Vedclass · Accepted Answer

$II > I > III$

Vedclass · Answer

(A) The stability of the given carbocations is determined by electronic effects:$I.$ $CH_3-CH^{+}-CH_3$: The carbocation is stabilized by the $+I$ effect of two methyl groups.$II.$ $CH_3-CH^{+}-OCH_3$: The carbocation is strongly stabilized by the $+R$ (resonance) effect of the $-OCH_3$ group,which is more effective than the $+I$ effect.$III.$ $CH_3-CH^{+}-CH_2-OCH_3$: The $-OCH_3$ group is separated by a methylene group,so its $-I$ effect destabilizes the carbocation.Comparing these,the resonance effect in $II$ provides maximum stability,followed by the inductive effect in $I$,while the $-I$ effect in $III$ makes it the least stable.Therefore,the correct order of decreasing stability is $II > I > III$.

Label	Carbocation
$1$	$CH_3-CH^+-CH_3$
$2$	$CH_3^+$
$3$	$(CH_3)_3C^+$
$4$	$CH_3-CH_2^+$

The correct order of decreasing stability of the following carbocations is:
$I. CH_3-CH^{+}-CH_3$
$II. CH_3-CH^{+}-OCH_3$
$III. CH_3-CH^{+}-CH_2-OCH_3$

Similar Questions

Arrange the following carbocations in the increasing order of stability with respect to their labels:
Label Carbocation
$1$ $CH_3-CH^+-CH_3$
$2$ $CH_3^+$
$3$ $(CH_3)_3C^+$
$4$ $CH_3-CH_2^+$

In the following reaction,which type of reaction intermediate is likely to be involved?

Arrange the following in decreasing order of stability.
$(i)$ $CH_3^{\bullet}$,$(CH_3)_3C^{\bullet}$,$(CH_3)_2CH^{\bullet}$ and $CH_3CH_2^{\bullet}$
$(ii)$ $CH_3CH_2^{+}$,$(CH_3)_3C^{+}$,$(CH_3)_2CH^{+}$ and $CH_3^{+}$

For the given reaction,the total number of possible products formed by the tertiary carbocation of $A$ is $.........$.

The incorrect statement about carbene $(CH_2)$ is:

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The correct order of decreasing stability of the following carbocations is:$I. CH_3-CH^{+}-CH_3$$II. CH_3-CH^{+}-OCH_3$$III. CH_3-CH^{+}-CH_2-OCH_3$