Nicotine can be made when the following ammonium salt is treated with Na2CO3. Draw a stepwise mechanism for this reaction. N N N nicotine CH3 NH2CH3 Na2CO3 NaHCO3 NaBr

Explanation:

The mechanism showing the process of the reaction is as follows:

From the given information, the starting compound includes a bromine atom & a  protonated primary amine group. At the initial stage, dissociation of sodium carbonate occurs to form carbonate ions. This is followed by the attraction of a proton by the carbonate ion from the protonated amine group.

After that, there is a nucleophilic attack on the carbon atom at the nitrogen site by a bromine atom which results in the formation of a cyclic product. Finally, deprotonation of the nitrogen atom occurs to form Nicotine.

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