Four patterns can be noted for certain organic reactions;
Pattern 1: Add a proton.
Pattern 2: Take a proton away.
Pattern 3: Reaction between an electrophile and nucleophile to form a new covalent bond.
Pattern 4: Reaction of proton donor with a carbon to carbon double bond to from a new covalent bond.
-To which pattern does the following reaction belong?

Question

Quizplus · Accepted Answer

The reaction shown involves a nucleophile (the lone pair on the nitrogen in the amine) attacking an electrophile (the carbonyl carbon in the aldehyde) to form a new covalent bond. This fits Pattern 3.

Four Patterns Can Be Noted for Certain Organic Reactions;