What is the correct order of decreasing stability of the following cations?
(i) $C H_{3} - \oplus C H - C H_{3}$
(ii) $C H_{3} - \oplus C H - O C H_{3}$
(iii) $C H_{3} - \oplus C H - C H_{2} - O C H_{3}$

II > I > III

Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses

II > III > I

No worries! We‘ve got your back. Try BYJU‘S free classes today!

III > I > II

No worries! We‘ve got your back. Try BYJU‘S free classes today!

I > II > III

No worries! We‘ve got your back. Try BYJU‘S free classes today!

Open in App

Solution

The correct option is B II > I > III
In (I) case, +vely charged C is attached to two alkyl groups and +I effect stabilize carbocation.
In (II) case, +R effect of $O C H_{3}$ group stabilize carbocation.
In (III) case, -I effect of - $O C H_{3}$ gp. destabilizes carbocation.
Hence, the order of stability: II > I >III.

Suggest Corrections

Similar questions

I - C H_{3} - * C H - C H_{3}

I I - C H_{3} - * C H - O C H_{3}

I I I - C H_{3} - * C H - C H_{2} - O C H_{3}

C H_{2} - + C H - C H_{3}

C H_{3} - + C H - O C H_{3}

C H_{3} - + C H - C O C H_{3}

C H_{3} - \oplus C H - C H_{3}

C H_{3} - \oplus C H - O C H_{3}

C H_{3} - \oplus C H - C H_{2} - O C H_{3}

{C H}_{3} - C H = {C H}_{2}

{C H}_{3} - C H = C H - {C H}_{3}

{C H}_{3} - C_{3} = C H - {C H}_{3}

{C H}_{3} - {C H}_{3} | C = {C H}_{3} | C - {C H}_{3}

Join BYJU'S Learning Program