In the following benzyl/allyl system underset text(R is alkyl group)R - CH = CH2 or decreasing order of inductive effect is

Question

In the following benzyl/allyl system underset text(R is alkyl group)R - CH = CH2 or <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/e1fbe3e2f09d14fdd0875a637d879ea9-.png" /> decreasing order of inductive effect is (A) ( CH 3)3 C ->( CH 3)2 CH -> CH 3 CH 2- (B) CH 3 CH 2->( CH 3)2 CH ->( CH 3)3 C - (C) ( CH 3)2 CH -> CH 3 CH 2->( CH 3)3 C -  (D)  (CH3)2C — > CH3CH2 — > (CH3)3CH —

Tardigrade Admin · Accepted Answer

Both where R is attached to vinylic (≈ arylic) system Positive inductive effect occurs in the following order: <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/0b97052358bc4af1525106eeaec297bf-.png" />

Q. In the following benzyl/allyl system
$(R is alkyl group) R - C H = C H_{2}$ or

decreasing order of inductive effect is

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

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

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

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

Both where R is attached to vinylic ( $\approx$ arylic) system Positive inductive effect occurs in the following order:

Q. In the following benzyl/allyl system (R is alkyl group)R−CH=CH2​​ or decreasing 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​CH2​−>(CH3​)3​C−

(CH3​)2​C—>CH3​CH2​—>(CH3​)3​CH—