The order of reactivity of the following comp | vedclass

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

Question

$(A)$ Electrophilic aromatic substitution is facilitated by electron-donating groups on the benzene ring.In the given compounds, the alkyl groups atta

Vedclass · Accepted Answer

$I > II > III > IV$

Vedclass · Answer

$(A)$ Electrophilic aromatic substitution is facilitated by electron-donating groups on the benzene ring.In the given compounds, the alkyl groups attached to the phenyl ring $(\phi)$ exhibit the $+I$ (inductive) effect and hyperconjugation.As the number of $\alpha$-hydrogens increases, the electron-donating ability via hyperconjugation increases, thereby increasing the electron density on the ring and the reactivity towards electrophiles.Number of $\alpha$-hydrogens:$I. \phi-CH_3$: $3 \ \alpha-H$$II. \phi-CH_2-CH_3$: $2 \ \alpha-H$$III. \phi-CH(CH_3)_2$: $1 \ \alpha-H$$IV. \phi-C(CH_3)_3$: $0 \ \alpha-H$Thus, the order of reactivity is $I > II > III > IV$.

The order of reactivity of the following compounds towards electrophilic substitution will be - [where $\phi = C_6H_5$]:
$I. \phi-CH_3$
$II. \phi-CH_2-CH_3$
$III. \phi-CH(CH_3)_2$
$IV. \phi-C(CH_3)_3$

Similar Questions

The Friedel-Crafts alkylation of benzene with propene proceeds through the formation of which of the following intermediates?

Benzene cannot undergo

In the following reaction,the catalyst used is:

Give the name and structure of an aromatic hydrocarbon with the molecular formula $C_{12}H_{10}$ which contains two benzene rings.

Benzene on treatment with a mixture of conc. $HNO_3$ and conc. $H_2SO_4$ at $100 \ ^oC$ gives

Vedclass Test Series

Exam Paper Generator

Online Exam Module

The order of reactivity of the following compounds towards electrophilic substitution will be - [where $\phi = C_6H_5$]:$I. \phi-CH_3$$II. \phi-CH_2-CH_3$$III. \phi-CH(CH_3)_2$$IV. \phi-C(CH_3)_3$