For the following carbocations the correct order of stability is I :⊕ CH 2- COCH 3 II: ⊕ CH 2- OCH 3 III: ⊕ CH 2- CH 3

Question

For the following carbocations the correct order of stability is I :⊕ CH 2- COCH 3 II: ⊕ CH 2- OCH 3 III: ⊕ CH 2- CH 3 (A) III < II < I (B) II < I < III (C) I < II < III (D) I < III <II

Tardigrade Admin · Accepted Answer

Stability of carbocations depends on following factors:
Stability of carbocation

\propto + M

or

+ I

effect
Stability of carbocation

\propto

Hyper conjugation
Stability of carbocation

\propto \frac{1}{- I effect}

Q. For the following carbocations the correct order of stability is I :⊕CH2​−COCH3​ II : ⊕CH2​−OCH3​ III : ⊕CH2​−CH3​

III < II < I

II < I < III

I < II < III

I < III

Stability of carbocations depends on following factors: Stability of carbocation ∝+M or +I effect Stability of carbocation ∝ Hyper conjugation Stability of carbocation ∝−I effect 1​

Q. For the following carbocations the correct order of stability is
I : $^{\oplus} C H_{2} - COC H_{3}$
II : $^{\oplus} C H_{2} - OC H_{3}$
III : $^{\oplus} C H_{2} - C H_{3}$

Stability of carbocations depends on following factors:
Stability of carbocation $\propto + M$ or $+ I$ effect
Stability of carbocation $\propto$ Hyper conjugation
Stability of carbocation $\propto \frac{1}{- I effect}$