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Explain S_(N)2 mechanism taking an example of chloromethane. |
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Answer» Solution :When methyl bromide undergoes hydrolysis with aqueous potassiumhydroxide, methyl alcohol is formed. `CH_3 - CL + KOH to CH_3 - OH + KCl` This mechanism involves only one step.  The nucleophile `OH^(-)` attack from the rear side of the leaving group. A transition state with partial formation of C - OH bond and partial BREAKING of C - Br bond takes place simultaneously. The rate of the REACTION DEPENDS both on the concentration of nucleophile as WELL as alkyl halide. Hence, it is a second order reaction. In `S_(N^2)` reaction, complete inversion of configruation takes place. |
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