The Pattern Behind Every Mechanism!

🧪 Need help with reactions? I’ve created flashcard sets to help you master Organic Chemistry: https://stan.store/RojasLab 💥 Instant download. Study smarter. Ace your exams. If you’re taking Organic Chemistry 2, this is the complete mechanism roadmap you’ve been looking for. In this video, I walk through every major mechanism covered in Organic Chemistry 2 and organize them into clear, repeatable patterns so you can stop memorizing reactions and start understanding them. We cover: • Nucleophilic addition to carbonyls • Nucleophilic acyl substitution • Fischer esterification and ester hydrolysis • Acetal formation and acetal hydrolysis • Enolate chemistry and alpha carbon reactions • Aldol and Claisen logic • 1,4-conjugate (Michael) addition • Electrophilic aromatic substitution • Grignard reactions • LiAlH₄ reductions • Saponification • Acid chloride reactions Instead of treating Organic Chemistry 2 as 40 disconnected mechanisms, this video shows you the underlying patterns that connect them all. If you’re studying for an Organic Chemistry 2 exam, midterm, or final, this serves as a full review of the most important reaction mechanisms you need to master. Organic chemistry becomes predictable when you understand: • When carbonyls undergo addition vs substitution • How leaving groups change the pathway • Why enolates unlock alpha carbon chemistry • How conjugation shifts electrophilicity • Why aromatic substitution restores stability This is not about memorization. It’s about building a framework. Pause when needed, draw along on paper, and use this as your Organic Chemistry 2 mechanism masterclass. If you found this helpful, subscribe for weekly mechanism breakdowns and deeper dives into organic chemistry problem solving. Chapters: 00:00 Stop Memorizing Mechanisms (Intro) 00:33 Carbonyl Polarity Basics 01:19 Protonating Carbonyls (Acid Activation) 02:40 Fischer Esterification 03:27 Acid-Catalyzed Ester Hydrolysis 04:05 Acetal Formation (Protection) 04:50 Acetal Hydrolysis (Deprotection) 05:32 Direct Nucleophilic Addition to Carbonyls 06:11 Cyanohydrin Formation 06:51 LiAlH₄ Reductions 07:15 Grignard Reactions (Alcohol Formation) 07:45 Carboxylic Acid Derivatives: Addition–Elimination 09:26 Saponification 09:55 Double Grignard Addition to Esters 10:45 Nitriles → Ketones (Controlled Addition) 11:30 Alpha Carbon Chemistry & Enolate Formation 12:40 Aldol & Claisen Logic 13:50 1,4-Conjugate (Michael) Addition 15:05 Electrophilic Aromatic Substitution (EAS) 16:30 Nucleophilic Aromatic Substitution (SNAr) 17:45 Benzyne Mechanism 19:00 Diels–Alder Reaction (Pericyclic Chemistry)