It is convenient to classify interactions, reactions & processes either by the reaction mechanism or some other 'collection' such as the sequence of reactions involved in a synthesis, etc.

Mechanisms: Collections:
Acid + Base -> Salt + Water
Addition
Addition: 1,1
Addition: Electrophilic
Addition: Electrophilic Protonation
Addition: Nucleophilic
Addition: Organometallic
Alkylation
Alpha Emission
Ambidentate Behaviour: Elimination vs Substitution 1
Ambidentate Behaviour: Elimination vs Substitution 2
Ambidentate Behaviour: Selectivity of beta-propiolactone
Ambidentate Cyanide Ion
Ambidentate Enolate Ions 1
Ambidentate Enolate Ions 2
Ambidentate Nitrite Ions
Ambidentate Sulfinate Ions
Ambidentate Thiocyanate Ions
Anion Bridge Bonding
Baeyer-Villiger Reaction
Benzyne Mechanism
Beta Emission
Birch Reduction
Calcination
Cannizzaro Reaction
Change of Coordination Number
Claisen Condensation
Claisen Rearrangement
Complexation or Coupling
Condensation
Conformational Change
Cracking, Catalytic
Cracking, Hydro
Cracking, Thermal
Decomplexation or Fragmentation
Decomposition by Heat (Pyrolysis)
Dehydration
Diels-Alder (type) Cycloaddition
Disproportionation
Dissolution: With Ionisation
Dissolution: Without Ionisation
Ease of Reduction of Organic FGs by Borane/THF
Ease of Reduction of Organic FGs by Hydrogenation
Ease of Reduction of Organic FGs by Lithal
Effervescence
Electric Discharge
Electrocyclic Ring Closure or Opening
Electrolysis
Electron Ionisation
Elimination
Elimination vs Substitution
Elimination: First Order
Elimination: First Order Carbanion Mechanism
Elimination: Internal
Elimination: Second Order
Eliminations 1: Carbene, Alkene & Ring Formation
Eliminations 2: The E1, E1cb, E2, and Ei Mechanisms
Enzyme Catalysed Biological Reaction
Explosion
Extraction
Fractional Distillation
Halogenation
Hydration: Addition of water
Hydroformylation
Hydrogen Bond Complexation
Hydrogenation, catalytic
Hydrogenolysis
Hydrolysis
Insertion
Kolbe Reaction
Ligand Exchange (Inorganic)
Metallation
Metathesis
Molecular Shape Recognition Complexation
Multistep: LA/B mechanism
Name Reaction
Neighbouring Group Effect
Oxidation Half Reaction
Oxidation: Of Substrate By Reagent
Pericyclic
Phase Change
Photochemical Excitation
Polymerisation
Precipitation
Prins Reaction
Proton transfer: Brønsted reaction
Proton Transfer: Lewis reaction
Radical Addition
Radical Cleavage
Radical Coupling
Radical Substitution
Rearrangement
Rearrangement: 1,2-Shift
Rearrangement: Aromatic
Rearrangement: Concerted
Rearrangement: Multistep
Rearrangement: Sigmatropic
Redox
Reduction Half Reaction
Reduction: Of Substrate By Reagent
Single Electron Transfer
SN1, SN2 and SNi Reaction Pathways
SNi: Reactivity of (2R)-2-Bromopropanoic acid
Solvation
Substitution: Addition-followed-by Elimination
Substitution: Allylic
Substitution: Concerted
Substitution: Electrophilic Aromatic
Substitution: Electrophilic First Order
Substitution: Electrophilic Second Order
Substitution: Ingold's Four Types of Sn2
Substitution: Multi-Step
Substitution: Nucleophilic @ Acyl-Nfg
Substitution: Nucleophilic Aromatic
Substitution: Nucleophilic First Order
Substitution: Nucleophilic Internal
Substitution: Nucleophilic Second Order
Substitution: Radical Nucleophilic First Order
Tautomerism
Type 1 Lewis Acid/Base Complexation Chemistry
Type 2 Lewis Acid/Base Complexation Chemistry
Type 3 Lewis Acid/Base Complexation Chemistry
Type 4 Lewis Acid/Base Complexation Chemistry
Type 5 Lewis Acid/Base Complexation Chemistry
Type 6 Lewis Acid/Base Complexation Chemistry
Type 7 Lewis Acid/Base Complexation Chemistry
Type 8 Lewis Acid/Base Complexation Chemistry
Type 9 Lewis Acid/Base Complexation Chemistry
Type 10 Lewis Acid/Base Complexation Chemistry
Type 11 Lewis Acid/Base Complexation Chemistry
Type 12 Lewis Acid/Base Complexation Chemistry
Type 13 Lewis Acid/Base Complexation Chemistry
Type 14 Lewis Acid/Base Complexation Chemistry
Type 15 Lewis Acid/Base Complexation Chemistry
Type 16 Lewis Acid/Base Complexation Chemistry
Type 17 Lewis Acid/Base Complexation Chemistry
Type 18 Lewis Acid/Base Complexation Chemistry
Type 19 Lewis Acid/Base Complexation Chemistry
Type 20 Lewis Acid/Base Complexation Chemistry
Type 21 Lewis Acid/Base Complexation Chemistry
Type 22 Lewis Acid/Base Complexation Chemistry
Type 23 Lewis Acid/Base Complexation Chemistry
Type 24 Lewis Acid/Base Complexation Chemistry
van der Waals Attraction
Wacker Oxidation
Wagner-Meerwein Rearrangement
Blast Furnace Reactions
Chain Extension
Coal Gasification
Cycle of Copper Reactions
Cyclisation
Diazomethane: A 1,3-Dipole
Ethylene the Petrochemical Building Block
Flame Chemistry: Carbon monoxide + Oxygen
Flame Chemistry: Formaldehyde + Oxygen
Flame Chemistry: Hydrogen + Oxygen
Flame Chemistry: Methane + Oxygen
Functional Group Interconvertion
Fundamental Particle Interactions
Industrial Process: Inorganic
Industrial Process: Organic
Iron chloride process for hydrogen production
Laboratory Synthetic Method
Nitrous Acid with Amines and Amides
Nuclear Chemistry: Nucleosynthesis Reaction
Nuclear Chemistry: Proton-Proton Chain (PPI)
Nuclear Chemistry: Triple Alpha Process
Photosensitised Toluene
Psudohalogens, Reactions of
Radioactive Decay Series: Actinium (4n + 3)
Radioactive Decay Series: Neptunium (4n + 1)
Radioactive Decay Series: Thorium (4n) Decay
Radioactive Decay Series: Uranium (4n + 2)
Raschig process
Sodium Halides + conc. H2SO4
Strategic Bond Formation
Synthesis of Biphenyl
Synthesis of Chloramphenicol
Thermolysis of Acetone
Tricarboxylic Acid Cycle


Courses:
British A-Level Chemistry: AS
British A-Level Chemistry: A2