Home/Alkyl halides
SN1 & SN2
Question#1
In SN1 reaction the correct order of reactivity of alkyl halides is [MDCAT2023]
for SN1/E1 primary < secondary < tertiary due to formation of carbocation.
for SN2/E2 primary > secondary > tertiary
Question#2
SN2 is best carried out with NUMS2015
Question#3
Reaction of alkyl halide with ammonia is called ETEA2010
Hoffman reaction
\( CH_3-CH_2-Br + NH_3 \rightarrow CH_3-CH_2-NH-CH_2-CH_3 \)
\( CH_3-CH_2-Br + CH_3-CH_2-NH-CH_2-CH_3 \rightarrow CH_3-CH_2-N<_{CH_2-CH_3}^{CH_2-CH_3} \)
\( CH_3-CH_2-Br + CH_3-CH_2-N<_{CH_2-CH_3}^{CH_2-CH_3} \rightarrow [_{CH_3-CH_2}^{CH_3-CH_2} >N<_{CH_2-CH_3}^{CH_2-CH_3}]^+Br^- \)
Question#4
Which of the following compound comparatively would react rapidly in an SN2 reaction ETEA2011
Reactivity order ( 1o > 2o > 3o )
Question#5
Displacement reaction that proceed by the SN2 mechanism are most successful with compounds that are ETEA2010
D) Primary compounds with no branch at B-Carbon: less hinderance for nu- to reach at electropositive C.