Which of the following compounds undergo E2 reactions with maximum rate?

Question

Which of the following compounds undergo E2 reactions with maximum rate? (A) CH 3 C ( CH 3)( Br ) CH 2 CH 3 (B) CH 3( CH 2)2 CH 2 Cl (C) CH 3( CH 2)2 CH 2 I (D) CH 3 C ( CH 3)( I ) CH 2 CH 3

Tardigrade Admin · Accepted Answer

Rate of elimination depends on degree of alkyl halide and nature of leaving group. C-I bond is broken easily as iodide is good leaving group. More over, the ease of elimination reaction is in the order 3o textalkylhalide > 2o textalkylhalide > 1o textalkylhalide .

Q. Which of the following compounds undergo E2 reactions with maximum rate?

$C H_{3} C (C H_{3}) (B r) C H_{2} C H_{3}$

$C H_{3} (C H_{2})_{2} C H_{2} Cl$

$C H_{3} (C H_{2})_{2} C H_{2} I$

$C H_{3} C (C H_{3}) (I) C H_{2} C H_{3}$

Rate of elimination depends on degree of alkyl halide and nature of leaving group. $C - I$ bond is broken easily as iodide is good leaving group. More over, the ease of elimination reaction is in the order $3^{o} alkylhalide > 2^{o} alkylhalide > 1^{o} alkylhalide$ .

Q. Which of the following compounds undergo E2 reactions with maximum rate?

CH3​C(CH3​)(Br)CH2​CH3​

CH3​(CH2​)2​CH2​Cl

CH3​(CH2​)2​CH2​I

CH3​C(CH3​)(I)CH2​CH3​

Rate of elimination depends on degree of alkyl halide and nature of leaving group. C−I bond is broken easily as iodide is good leaving group. More over, the ease of elimination reaction is in the order 3oalkylhalide>2oalkylhalide>1oalkylhalide .

$C H_{3} C (C H_{3}) (B r) C H_{2} C H_{3}$

$C H_{3} (C H_{2})_{2} C H_{2} Cl$

$C H_{3} (C H_{2})_{2} C H_{2} I$

$C H_{3} C (C H_{3}) (I) C H_{2} C H_{3}$

Rate of elimination depends on degree of alkyl halide and nature of leaving group. $C - I$ bond is broken easily as iodide is good leaving group. More over, the ease of elimination reaction is in the order $3^{o} alkylhalide > 2^{o} alkylhalide > 1^{o} alkylhalide$ .