This is based on the RSC Name Reactions Ontology, a hierarchy of classes of organic chemical reactions.

Cleaving reaction

• Beckmann fragmentation
• Criegee oxidation
• Dakin reaction
• Edman degradation
• Emde degradation
• Japp–Klingemann reaction
• Retro-aldol addition

End-of-chain shortening

• Barbier–Wieland degradation
• Barton decarboxylation
• Hunsdiecker reaction
• Schmidt rearrangement, carboxylic acid
• Strecker degradation
• Weerman reaction

Extrusion reaction

• Benzidine rearrangement
• Ramberg–Bäcklund reaction
• Semidine rearrangement

Fragmentation reaction

• Grob rearrangement

Polonovski reaction

• Polonovski reaction
• Polonovski–Potier reaction

Functional modification

• Deprotection reaction

Addition reaction

• Birch reduction
• Hydroamination
• Hydroboration
• Hydroboration–oxidation
• Hydrosilylation
• Noyori asymmetric hydrogenation, alkene
• Sharpless asymmetric aminohydroxylation
• Sharpless asymmetric dihydroxylation
• Stork–Crabtree hydrogenation

Hydrometallation

• Hydroalumination
• Hydrostannylation
• Hydrotelluration
• Hydrozirconation

Elimination reaction

• Bamford–Stevens reaction
• Hofmann elimination
• Shapiro reaction

Functional group modification

• Aza–Wittig reaction
• Azo coupling
• Cannizzaro reaction
• Crossed Cannizzaro reaction
• Finkelstein reaction
• Leukart reaction
• Leukart–Wallart reaction
• Nef reaction
• Pummerer reaction
• Ritter reaction
• Sommelet reaction
• Tishchenko reaction
• Willgerodt reaction
• Willgerodt–Kindler reaction
• Woehler reaction

Functional group oxidation

• Dess–Martin oxidation
• Diazotisation
• Elbs persulfate oxidation, tolyl varient
• Fenton reaction, carboxylic acid varient
• Fenton reaction, diol varient
• Fetizon oxidation
• Lindgren oxidation
• Menshutkin reaction
• Oppenauer oxidation
• Pfitzner–Moffatt oxidation
• Swern oxidation
• Wacker process
• Wacker–Tsuji oxidation

Functional group reduction

• Barton–McCombie deoxygenation
• Bouveault–Blanc reaction
• Clemmensen reduction
• Luche reduction
• Meerwein–Ponndorf–Verley reduction
• Noyori asymmetric hydrogenation, carbonyl
• Rosenmund reduction
• Wolff–Kishner reduction
• Wolff–Kishner reduction, Huang–Minlon modification
• Zemplen transesterification

Protection reaction

• Boc protection
• Fmoc protection

Substitution reaction

• Allylic rearrangement
• Arbuzov reaction
• Fischer–Speier esterification
• Fleming–Tamao oxidation
• Gabriel synthesis
• Ing–Manske procedure
• Katritzky pyrylium–pyridinium method
• Kharasch–Sosnovsky reaction
• Michaelis–Arbuzov reaction
• Nicholas reaction, nucleophilic heteroatom centre
• Petasis reaction
• Schotten–Baumann reaction
• Tamao oxidation
• Williamson ether synthesis
• Wohl–Ziegler bromination

Aromatic substitution

• Balz–Schiemann reaction
• Boyland–Sims oxidation
• Buchwald–Hartwig amination
• Elbs persulfate oxidation, phenol variant
• Gattermann halogenation
• Goldberg reaction
• Koerner–Contardi reaction
• Sandmeyer reaction
• Ullmann condensation

Mitsunobu reaction

• Bose–Mitsunobu reaction
• Mitsunobu reaction

Joining reaction

• Aza–ene reaction
• Dakin–West reaction
• Ene reaction
• Fischer–Tropsch process
• Hydroformylation
• Passerini reaction
• Perkow reaction
• Staudinger reaction
• Thiol–ene reaction
• Ugi reaction
• Vorbrueggen condensation

Carbon–carbon coupling reaction

• Acyloin condensation
• Aza–Henry reaction
• Barbier reaction
• Benzoin condensation
• Blaise reaction
• Cadiot–Chodkiewicz coupling
• Cadogan coupling
• Cativa process
• Claisen condensation
• Friedel–Crafts acylation
• Friedel–Crafts alkylation
• Gattermann reaction
• Grignard reaction
• Heck reaction
• Henry reaction
• Hiyama coupling
• Horner reaction
• Horner–Wadsworth–Emmons reaction
• Julia olefination
• Knoevenagel condensation
• Kolbe electrolysis
• Kolbe–Schmitt reaction
• Kumada coupling
• Luche reaction
• Malonic ester synthesis
• Mannich reaction
• Monsanto process
• Negishi coupling
• Nicholas reaction, nucleophilic carbon centre
• Nozaki–Hiyama–Kishi reaction
• Peterson olefination
• Prins reaction
• Reimer–Tiemann reaction
• Rosenmund–von Braun reaction
• Sakurai reaction, acetal or ketal
• Sakurai reaction, acid chloride
• Sakurai reaction, aldehyde or ketone
• Sakurai reaction, enone
• Sakurai reaction, iminium salt
• Sonogashira coupling
• Stille coupling
• Stork–Wittig olefination
• Suzuki–Miyaura coupling
• Vilsmeier–Haack reaction
• Zimmermann reaction

Aldol addition

• Aldol condensation

Baylis–Hillman reaction

• Baylis–Hillman reaction
• Aza–Baylis–Hillman reaction

Carbon–carbon homocoupling reaction

• Eglinton reaction
• Glaser coupling
• Ullmann reaction
• Wurtz reaction
• Zweifel diene synthesis

Hydrovinylation

• 1,4-Hydrovinylation

Reformatsky reaction

• Reformatsky reaction
• Imino Reformatsky reaction

Wittig reaction

• Wittig reaction
• Wittig methylenation

Chain lengthening

• Corey–Fuchs reaction
• Kharasch reaction
• Strecker reaction

Conjugate addition

• Michael addition
• Nitro–Michael reaction

Insertion reaction

• Arndt–Eistert reaction
• Baeyer–Villiger oxidation
• Schmidt rearrangement, alkene
• Schmidt rearrangement, ketone
• Schmidt rearrangement, tertiary alcohol

Joining with rearrangement

• Bellus–Claisen rearrangement
• Eschenmoser–Claisen rearrangement
• Johnson–Claisen rearrangement

Multiple-bond metathesis

• Alkene metathesis
• Alkyne metathesis
• Enyne metathesis

Polymerisation reaction

• Aufbau reaction
• Ring-opening metathesis polymerisation
• Yamamoto polymerisation

Rearrangement

• Aromatic Claisen rearrangement
• Aza–Ferrier rearrangement
• Baker–Venkataraman rearrangement
• Barton reaction
• Beckmann rearrangement
• Benzilic acid rearrangement
• Brook rearrangement
• Carroll rearrangement
• Claisen rearrangement
• Cope rearrangement
• Curtius rearrangement
• Ferrier rearrangement
• Fischer–Hepp rearrangement
• Fritsch–Buttenberg–Wiechell rearrangement
• Ireland–Claisen rearrangement
• Lossen rearrangement
• Metalla–aza–Claisen rearrangement
• Neber rearrangement
• Oxy–Cope rearrangement
• Pinacol rearrangement
• Sommelet–Hauser rearrangement
• Steglich rearrangement
• Wolff rearrangement

Aza–Cope rearrangement

• 1-aza–Cope rearrangement
• 2-aza–Cope rearrangement
• 3-aza–Cope rearrangement

Stevens rearrangement

• Stevens rearrangement, ammonium
• Stevens rearrangement, sulfonium

Wittig rearrangement

• 1,2-aza–Wittig rearrangement
• 1,2-Wittig rearrangement
• 2,3-aza–Wittig rearrangement
• 2,3-Wittig rearrangement

Ring breaking

• Retro Diels–Alder reaction
• Ring-opening metathesis
• Sakurai reaction, epoxide

Ring contraction

Ring expansion

• Pfitzinger reaction

Ring formation reaction

• 1,3-Dipolar cycloaddition
• Alkyne–azide click reaction
• Bergman cyclisation
• Biginelli reaction
• Copper(I)-catalyzed azide–alkyne cycloaddition
• Darzens reaction
• Dieckmann cyclisation
• Hantzsch pyridine synthesis
• Intramolecular Prins reaction
• Nazarov cyclisation
• Paterno–Buchi reaction
• Ring-closing enyne metathesis
• Ring-closing metathesis
• Sharpless asymmetric epoxidation
• Simmons–Smith reaction

Diels–Alder reaction

• Diels–Alder reaction
• Aza–Diels–Alder reaction

Fused-ring-system formation

• Bischler–Napieralski reaction
• Cadogan carbazole synthesis
• Doebner reaction
• Doebner–Miller reaction
• Fischer indole synthesis
• MacDonald condensation
• Pictet–Spengler reaction
• Skraup reaction

Paal–Knorr synthesis

• Paal–Knorr furan synthesis
• Paal–Knorr pyrrole synthesis
• Paal–Knorr thiophene synthesis

Ring rearrangement

• Achmatowicz rearrangement
• Aza–Achmatowicz rearrangement
• Aza–Payne rearrangement
• Dimroth rearrangement
• Payne rearrangement