Practice organic chemistry,
at your own pace.

Structure and Bonding

Hybridization, geometry, formal charge, degrees of unsaturation, and the intermolecular forces that set boiling points.

pKa and Acid Strength

Rank acid strength with pKa: functional group hierarchies, conjugate bases, and which base is strong enough for the job.

Acid-Base Equilibria and Structural Effects

Predict equilibrium direction from pKa and explain acidity with the classic structural factors: charge, element, resonance, induction, and hybridization.

Resonance Structures

Draw resonance contributors with correct charges and pick the major contributor using the stability rules.

Stereochemistry: R/S and Isomer Relationships

Assign R/S and E/Z from wedge-dash drawings, spot meso compounds, and classify pairs as enantiomers, diastereomers, or identical.

Conformations: Newman Projections and Chairs

Butane conformers, torsional versus steric strain, ring strain, and axial-equatorial preferences on the cyclohexane chair.

Reading Newman Projections and Chairs

Identify conformations from actual Newman projections and chair drawings: anti vs gauche vs eclipsed, and axial vs equatorial.

Kinetics, Thermodynamics, and Energy Diagrams

Read reaction coordinate diagrams (intermediates, transition states, activation energy) and connect rate laws to SN1/SN2 kinetics.

Fischer Projections

Read Fischer projections: the toward/away convention, R/S assignment, meso recognition, and the rotation and swap rules.

Aromaticity and Huckel's Rule

Apply Huckel's rule: count pi electrons, spot antiaromatic and nonaromatic rings, and track which lone pairs join the pi system.

1H and 13C NMR Basics

Count signals with symmetry, apply the n+1 splitting rule, and place chemical shifts for the common proton environments.

Naming Alkanes, Alkenes, and Alkynes

Draw and name straight-chain and branched alkanes, alkenes, and alkynes from IUPAC prompts

Naming Alcohols, Halides, and Rings

Draw and name alcohols, alkyl halides, ethers, and substituted rings, including R/S designations from wedge-dash drawings.

Alkene Reactions · Pt 1

Predict major products for electrophilic additions, oxidations, and reductions of alkenes across diverse reagent sets

Alkene Reactions · Pt 2

Predict major products for electrophilic additions, oxidations, and reductions of alkenes across diverse reagent sets

Alkene Reactions · Pt 3

Predict major products for electrophilic additions, oxidations, and reductions of alkenes across diverse reagent sets

Alkyne Reactions · Pt 1

Test your command of alkyne chemistry from iterative hydrohalogenation to dissolving-metal reductions and hydroboration cascades

Alkyne Reactions · Pt 2

Test your command of alkyne chemistry from iterative hydrohalogenation to dissolving-metal reductions and hydroboration cascades

Alcohol Reactions · Pt 1

Convert alcohols through substitution, oxidation, protection, and elimination pathways using classic reagents

Alcohol Reactions · Pt 2

Convert alcohols through substitution, oxidation, protection, and elimination pathways using classic reagents

Alcohol Reactions · Pt 3

Convert alcohols through substitution, oxidation, protection, and elimination pathways using classic reagents

Alcohol Reactions · Pt 4

Convert alcohols through substitution, oxidation, protection, and elimination pathways using classic reagents

Epoxide Reactions · Pt 1

Work through regioselective epoxide openings driven by acids, heteroatom nucleophiles, hydrides, and organometallic reagents

Epoxide Reactions · Pt 2

Work through regioselective epoxide openings driven by acids, heteroatom nucleophiles, hydrides, and organometallic reagents

Aldehyde and Ketone Reactions · Pt 1

Practice core aldehyde and ketone chemistry—reductions, nucleophilic additions, condensations, and Wittig-type transformations

Aldehyde and Ketone Reactions · Pt 2

Practice core aldehyde and ketone chemistry—reductions, nucleophilic additions, condensations, and Wittig-type transformations

SN2 Reactions

Predict products for SN2 nucleophilic substitution reactions with strong nucleophiles and primary/methyl substrates

SN1 Reactions

Predict products for SN1 nucleophilic substitution reactions with tertiary and benzylic substrates and weak nucleophiles

Elimination Reactions (E1 & E2)

Predict elimination products — Zaitsev and Hofmann selectivity with strong bases (E2) and weak bases with heat (E1)

Radical Reactions

Radical halogenation selectivity, allylic bromination with NBS, and the initiation-propagation-termination chain.

Dienes: Conjugate Addition and Diels-Alder

Kinetic 1,2- vs thermodynamic 1,4-addition to conjugated dienes, plus Diels-Alder products, the s-cis requirement, and stereospecificity.

EAS: Products and Directing Effects

Draw electrophilic aromatic substitution products and predict regiochemistry with activating, deactivating, and ortho/para vs meta directors.

Carboxylic Acids and Derivatives

Interconvert the acyl family: acid chlorides, anhydrides, esters, and amides, with the reactivity order and reduction outcomes.

SN1 vs SN2 vs E1 vs E2

Draw the major product for substitution and elimination reactions