Nucleophilic substitution reactions, Chemistry Assignment Help

Assignment Help: >> Chemical Properties of Alkyl Halides >> Nucleophilic substitution reactions, Chemistry

Nucleophilic substitution (SN) reactions : The  890_nucleophillec substitution13.png site is susceptible to attack by nucleophiles (An electron rich species).                     

2086_nucleophillec substitution.png

(SN2 Reaction) 

         Examples of SN reactions,

         (a) Hydrolysis :

         2211_nucleophillec substitution1.png

         r            With the help of this reaction an alkene can be converted into alcohol. Alkene is first reacted with HBr to form alkyl bromide and then hydrolysis is done.

         1354_nucleophillec substitution2.png

         (b) Reaction with alkoxides or dry silver oxide :

         541_nucleophillec substitution3.png

         (c) Reaction with sodium or potassium hydrogen sulphide :

         57_nucleophillec substitution4.png

         (d) Reaction with alcoholic potassium cyanide and silver cyanide :

         593_nucleophillec substitution5.png

         (e) Reaction with potassium nitrite or silver nitrite :

 2188_nucleophillec substitution6.png

         (f) Reaction with ammonia :

            2349_nucleophillec substitution7.png

         (g) Reaction with silver salts of fatty acids :

             1179_nucleophillec substitution8.png         

         (h) Reaction with sodium acetylide :

         1052_nucleophillec substitution9.png

         (i) Reaction with sodium or potassium sulphide

            704_nucleophillec substitution10.png

         Thioethers can also be obtained by

            421_nucleophillec substitution11.png

         (j) Reaction with halides :

            95_nucleophillec substitution12.png

 

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