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Chemistry Question on Haloalkanes and Haloarenes

Under identical conditions, the SN1S_N1 reaction will occur most efficiently with

A

tert-butyl chloride

B

1-chlorobutane

C

2-methyl-1-chloropropane

D

2-chlorobutane

Answer

tert-butyl chloride

Explanation

Solution

SN1S_{N^{1}} reaction is most effective in 3∘3^{\circ} carbon.
CH3)3−C−Cltert-butyl chloride(3∘)   CH3CH2CH2CH2Cl1-chlorobutane(1∘)\underset{\text{tert-butyl chloride} \left(3^{\circ}\right)}{CH _{3} ) _{3}- C - Cl}\, \,\, \underset{\text{1-chlorobutane} \left(1^{\circ}\right)}{CH _{3} CH _{2} CH _{2} CH _{2} Cl}
Cl−CH2−CH(CH3)−CH32-methyl 1 -chloropropane(1∘)\underset{\text{2-methyl 1 -chloropropane} \left(1^{\circ}\right)}{Cl - CH _{2}- CH \left( CH _{3}\right)- CH _{3}}
CH3CH2CH(Cl)CH32-chlorobutane(2∘)\underset{\text{2-chlorobutane} \left(2^{\circ}\right)}{CH _{3} CH _{2} CH ( Cl ) CH _{3}}