Question

give two example of nucleophile substitution reaction of alkyl halide

Answer 1

this both reaction are examples of

Answer 2

Nucleophilic Substitution (SN1
SN2)



Nucleophilic substitution is the reaction of an electron pair donor (the nucleophile, Nu) with an electron pair acceptor (the electrophile). An sp3-hybridized electrophile must have a leaving group (X) in order for the reaction to take place.
The SN1 Reaction

In an SN1 reaction, bond breakage and bond formation do NOT happen simultaneously. The leaving group departs first, taking the shared electron pair with it. This leaves a Carbocation, which is a species where the electrophilic carbon is completely deficient 2 electrons, so it carries a full +1 charge (Review the concept Formal Charge from General Chemistry, if necessary, if you are not sure why the charge is +1). At this point, the Nucleophile can attack this positive carbon center from either side, because the carbocation is a Triagonal Planar species.