How to Get an A in Organic Chemistry: A Semester-Long Study System That Actually Works

Organic chemistry doesn't reward reading. It rewards pattern recognition. If you study orgo the way you studied general chemistry — read the chapter, do the homework, pray for the exam — you'll land in the C+ band the same way 60% of the class does. The students who get A's do something fundamentally different. Here's what.

The single biggest insight

The semester at a glance

The daily pattern (Monday–Friday)

1. 120 minutes: re-draw every mechanism from yesterday's lecture from memory. If you can't, mark it and re-draw with the notes open.
2. 230 minutes: 5 problems from the textbook on this week's reaction type. Do them by hand, not by typing.
3. 310 minutes: review your missed problems from yesterday. Same-day-plus-one-day review is the spaced-repetition sweet spot for orgo mechanisms.
4. 4Optional: 10-minute audio review on your walk between classes. Most students underuse the gap-time review windows.

What to memorize (the unavoidable list)

• All ~20 functional groups, by sight, both line and Lewis structures.
• Substitution and elimination decision tree (substrate, base/nucleophile strength, solvent, sterics).
• pKa values for ~25 representative compounds. The actual numbers, not the trend.
• Carbonyl reactivity hierarchy (acid chloride > anhydride > ester > amide).
• Resonance and stability rules for carbocations and radicals.
• Common reagents and what each one does (NaBH4, LiAlH4, mCPBA, Grignards, organocuprates, PCC, DMP, etc.) — eventually 50+ reagents.

How to draw mechanisms that don't lose points

1. 1Every arrow starts at electrons (lone pair or bond) and ends at where they're going (atom or new bond position).
2. 2Show every intermediate. Carbocations, tetrahedral intermediates, transition states — even when you 'know' them.
3. 3Charges balance on every step. If you start neutral, you end neutral.
4. 4Re-draw every product to confirm geometry — not just the connectivity.
5. 5If your professor uses a specific arrow convention (some prefer single-headed vs double-headed for radicals), use theirs exactly.

The active recall layer

This is where most students fail orgo. They re-read the textbook and feel productive. Re-reading is the lowest-yield study technique that exists for organic chemistry. What works is forcing yourself to produce mechanisms from blank paper, then checking. AceNotes' free orgo decks let you flip a starting material and a reagent and see the full mechanism — drawn out, arrows and all. Drill 10 of those a day for 6 weeks and the substitution / elimination / addition library becomes muscle memory.

Exam week protocol

1. 1T-7: take a full old exam under timed conditions. Score it. Identify the 2–3 mechanisms that cost you the most points.
2. 2T-6 to T-3: drill those mechanisms specifically. 30 minutes a day, just those.
3. 3T-2: take a second old exam. Adjust.
4. 4T-1: light review only — don't learn new material the day before. Sleep matters more than the marginal reagent.
5. 5Day-of: re-draw the mechanism decision trees on scratch paper before the exam starts (substitution/elimination tree is the most common).

The synthesis question, decoded

Multi-step synthesis is the question that separates A's from B's. The trick: work backwards from the product. Identify the carbon skeleton you need to build, then figure out which functional group transformations get you there. Practice with retrosynthesis problems specifically — most textbooks have a chapter dedicated to them.

What works alongside the textbook

• AceNotes — free organic chemistry study sets with mechanism flashcards, AI tutor that walks through any starting-material → product question.
• Chad's Prep / Khan Academy Organic Chem / Organic Chemistry Tutor on YouTube — free video walkthroughs for hard mechanism types.
• ChemDraw / MarvinSketch — practice drawing structures cleanly; carries over to exam quality.
• Pushing Electrons (book) — short, classic intro to arrow-pushing notation.