Increasing order of reactivity of the following compounds for S_{N}1  substitution is :

  • Option 1)

    (B)<(C)<(D)<(A)

  • Option 2)

    (B)<(C)<(A)<(D)

  • Option 3)

    (B)<(A)<(D)<(C)

  • Option 4)

    (A)<(B)<(D)<(C)

Answers (1)

 

Mesomeric or Resonance effect -

Migration of lone pair or \pielectron in a conjugated system.

- wherein

It is a permanent effect

 

 

Stability due to resonance -

More the no of resonating structure more is the stability.

- wherein

 

 

 

 

 

Hyperconjugation or σ-π resonance or Baker and Nathan effect -

The conjugation between \alpha C-H sigma bond and adjacent  multiple bond or carbocation is called Hyperconjugation.

- wherein

It is permanent effect.

 

 

 

Application of Hyperconjugation -

More is the no of Hyperconjugation  structure more is the stability of carbocation

- wherein

 

 

(a)  

 

(b) 

 

(c)

(d)  

order \Rightarrow\:\:\:\:b<a<d<c

1^0 < 3^0

+M>delocalisation >3^{0}>1^{0}


Option 1)

(B)<(C)<(D)<(A)

Option 2)

(B)<(C)<(A)<(D)

Option 3)

(B)<(A)<(D)<(C)

Option 4)

(A)<(B)<(D)<(C)

Preparation Products

Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
Buy Now
Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-
Buy Now
Test Series JEE Main April 2021

Take chapter-wise, subject-wise and Complete syllabus mock tests and get in depth analysis of your test..

₹ 6999/- ₹ 4999/-
Buy Now
JEE Main Rank Booster 2021

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 13999/- ₹ 9999/-
Buy Now
Test Series JEE Main April 2022

Take chapter-wise, subject-wise and Complete syllabus mock tests and get an in-depth analysis of your test..

₹ 6999/-
Buy Now
Boost your Preparation for JEE Main 2021 with Personlized Coaching
 
Exams
Articles
Questions