Arrangement of ( CH3) 3- C -( CH 3) 2- CH 2 CH 3- CH 2 - when attached to benzyl or an unsaturated group in increasing order of inductive effect is

Question

Arrangement of ( CH3) 3- C -( CH 3) 2- CH 2 CH 3- CH 2 - when attached to benzyl or an unsaturated group in increasing order of inductive effect is (A) (CH3)3 -C - < (CH3)2 - CH - < CH3 - CH2- (B) CH3 -CH2 - < (CH3)2 - CH - < (CH3)3 -C - (C) (CH3)2 - CH- < (CH3)3 -C - < CH3—CH2 - (D) (CH3 )3 - C- < CH3 -CH2 - < (CH3 )2 -CH -

Tardigrade Admin · Accepted Answer

In general greater the number of alkyl groups attached to a positively charged Catoms, the greater is the hyperconjugation interaction and stabilization of the cation. Hyperconjugation effect increases in the order,

(C H_{3}) C - < (C H_{3})_{2} C H - < C H_{3} C H_{2} - .

Q. Arrangement of $(C H_{3})_{3} - C - (C H_{3})_{2} - C H_{2} C H_{3} - C H_{2}$ - when attached to benzyl or an unsaturated group in increasing order of inductive effect is

$(C H_{3})_{3} - C - < (C H_{3})_{2} - C H - < C H_{3} - C H_{2} -$

$C H_{3} - C H_{2} - < (C H_{3})_{2} - C H - < (C H_{3})_{3} - C -$

$(C H_{3})_{2} - C H - < (C H_{3})_{3} - C - < C H_{3} — C H_{2} -$

$(C H_{3})_{3} - C - < C H_{3} - C H_{2} - < (C H_{3})_{2} - C H -$

In general greater the number of alkyl groups attached to a positively charged Catoms, the greater is the hyperconjugation interaction and stabilization of the cation. Hyperconjugation effect increases in the order,
$(C H_{3}) C - < (C H_{3})_{2} C H - < C H_{3} C H_{2} - .$

Q. Arrangement of (CH3​)3​−C−(CH3​)2​−CH2​CH3​−CH2​ - when attached to benzyl or an unsaturated group in increasing order of inductive effect is

(CH3​)3​−C−<(CH3​)2​−CH−<CH3​−CH2​−

CH3​−CH2​−<(CH3​)2​−CH−<(CH3​)3​−C−

(CH3​)2​−CH−<(CH3​)3​−C−<CH3​—CH2​−

(CH3​)3​−C−<CH3​−CH2​−<(CH3​)2​−CH−