Which of the following halide shows highest reactivity towards SN1 reaction?

Question

Which of the following halide shows highest reactivity towards SN1 reaction? (A) C6H5CH2Cl (B) CH3- CH2Cl (C) CH3 - CH2 - CH2 - CH2I (D) C6H5Cl

Tardigrade Admin · Accepted Answer

The rate of an S N 1 reaction is determined by the stability of the intermediate formed. In this case, the most stable intermediate formed would be for C 6 H 5 CH 2 Cl and the intermediate formed would be C 6 H 5 CH 2 +. This intermediate is stabilised via resonance.

Q. Which of the following halide shows highest reactivity towards $S_{N} 1$ reaction?

$C_{6} H_{5} C H_{2} Cl$

$C H_{3} - C H_{2} Cl$

$C H_{3} - C H_{2} - C H_{2} - C H_{2} I$

$C_{6} H_{5} Cl$

The rate of an $S_{N} 1$ reaction is determined by the stability of the intermediate formed. In this case, the most stable intermediate formed would be for $C_{6} H_{5} C H_{2} Cl$ and the intermediate formed would be $C_{6} H_{5} C H_{2}^{+}$ . This intermediate is stabilised via resonance.

Q. Which of the following halide shows highest reactivity towards SN​1 reaction?

C6​H5​CH2​Cl

CH3​−CH2​Cl

CH3​−CH2​−CH2​−CH2​I

C6​H5​Cl