Predict the products of the following reactions:
(i)

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Step 1: Identify the functional groups in the reactants. The molecule on the left contains a primary amine group (CH3NH2), and the molecule on the right contains an acyl chloride group (CH2-C(=O)-Cl). Pyridine is used as a base in this reaction.

Step 2: Understand the reaction mechanism. Acyl chlorides are highly reactive and undergo nucleophilic acyl substitution reactions. The amine (CH3NH2) acts as a nucleophile and attacks the carbonyl carbon of the acyl chloride.

Step 3: Describe the nucleophilic attack. The lone pair of electrons on the nitrogen atom of CH3NH2 attacks the electrophilic carbonyl carbon, forming a tetrahedral intermediate. The chloride ion (Cl⁻) is displaced as a leaving group.

Step 4: Role of pyridine. Pyridine acts as a base to neutralize the HCl formed during the reaction, ensuring the reaction proceeds efficiently and preventing side reactions.

Step 5: Predict the product. The final product is an amide, where the acyl chloride group is replaced by the amine group, forming CH3NH-C(=O)-CH2-cyclohexane.

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