# List of organic reactions

Well-known reactions and reagents in organic chemistry include
* A
* B
* C
* D
* E
* F
* G
* H
* I
* J
* K
* L
* M
* N
* O
* P
* Q
* R
* S
* T
* U
* V
* W
* X
* Y
* Z
* See also
* External links

## 0-9

* 1,2-Wittig rearrangement
* 1,3-Dipolar cycloaddition
* 2,3-Wittig rearrangement

## A

* Acetalisation
* Acetoacetic ester condensation
* Achmatowicz reaction
* Acylation
* Acyloin condensation
* Adams' catalyst
* Adams decarboxylation
* Adkins catalyst
* Adkins–Peterson reaction
* Akabori amino acid reaction
* Alcohol oxidation
* Alder ene reaction
* Alder–Stein rules
* Aldol addition
* Aldol condensation
* Algar–Flynn–Oyamada reaction
* Alkylimino-de-oxo-bisubstitution
* Alkyne trimerisation
* Alkyne zipper reaction
* Allan–Robinson reaction
* Allylic rearrangement
* Amadori rearrangement
* Amine alkylation
* Angeli–Rimini reaction
* Andrussov oxidation
* Appel reaction
* Arbuzov reaction, Arbusow reaction
* Arens–Van Dorp synthesis, Isler modification
* Aromatic nitration
* Arndt–Eistert synthesis
* Aston–Greenburg rearrangement
* Auwers synthesis
* Aza-Cope rearrangement
* Azo coupling

## B

* Baeyer–Drewson indigo synthesis
* Baeyer–Villiger oxidation, Baeyer–Villiger rearrangement
* Bakeland process (Bakelite)
* Baker–Venkataraman rearrangement, Baker–Venkataraman transformation
* Baldwin's rules
* Bally–Scholl synthesis
* Balz–Schiemann reaction
* Bamberger rearrangement
* Bamberger triazine synthesis
* Bamford–Stevens reaction
* Barbier reaction
* Barbier–Wieland degradation
* Bardhan–Sengupta phenanthrene synthesis
* Barfoed's test
* Bargellini reaction
* Bartoli indole synthesis, Bartoli reaction
* Barton decarboxylation
* Barton reaction
* Barton–Kellogg reaction
* Barton–McCombie reaction, Barton deoxygenation
* Barton-Zard Synthesis
* Barton vinyl iodine procedure
* Baudisch reaction
* Bayer test
* Baylis–Hillman reaction
* Bechamp reaction
* Bechamp reduction
* Beckmann fragmentation
* Beckmann rearrangement
* Bellus–Claisen rearrangement
* Belousov–Zhabotinsky reaction
* Benary reaction
* Benedict's reagent
* Benkeser reaction
* Benzidine rearrangement
* Benzilic acid rearrangement
* Benzoin condensation
* Bergman cyclization
* Bergmann azlactone peptide synthesis
* Bergmann degradation
* Bergmann–Zervas carbobenzoxy method
* Bernthsen acridine synthesis
* Bestmann's reagent
* Betti reaction
* Biginelli pyrimidine synthesis
* Biginelli reaction
* Bingel reaction
* Birch reduction
* Bischler–Möhlau indole synthesis
* Bischler–Napieralski reaction
* Biuret test
* Blaise ketone synthesis
* Blaise reaction
* Blanc reaction
* Blanc chloromethylation
* Blum–Ittah aziridine synthesis
* Bodroux reaction
* Bodroux–Chichibabin aldehyde synthesis
* Bogert–Cook synthesis
* Bohlmann-Rahtz pyridine synthesis
* Bohn–Schmidt reaction
* Boord olefin synthesis
* Borodin reaction
* Borsche–Drechsel cyclization
* Bosch–Meiser urea process
* Bosch reaction
* Bouveault aldehyde synthesis
* Bouveault–Blanc reduction
* Boyland–Sims oxidation
* Boyer Reaction
* Bredt's rule
* Brook rearrangement
* Brown hydroboration
* Bucherer carbazole synthesis
* Bucherer reaction
* Bucherer–Bergs reaction
* Buchner ring enlargement
* Büchner–Curtius–Schlotterbeck reaction
* Buchwald–Hartwig amination
* Bunnett reaction
* Burgess reagent

## C

* Cadiot–Chodkiewicz coupling
* Cadogan-Sundberg indole synthesis
* Camps quinoline synthesis
* Cannizzaro reaction
* Carbohydrate acetalisation
* Carbonyl reduction
* Carbonylation
* Carbylamine reaction
* Carroll reaction
* Castro–Stephens coupling
* Catalytic reforming
* Catellani Reaction
* CBS reduction
* Chan–Lam coupling
* Chapman rearrangement
* Cheletropic reaction
* Chichibabin pyridine synthesis
* Chichibabin reaction
* Chiral pool synthesis
* Chugaev elimination
* Ciamician–Dennstedt rearrangement
* Claisen condensation
* Claisen rearrangement
* Claisen–Schmidt condensation
* Clemmensen reduction
* Collins reagent
* Combes quinoline synthesis
* Conia reaction
* Conrad–Limpach synthesis
* Cook–Heilbron thiazole synthesis
* Cope elimination
* Cope rearrangement
* Corey reagent
* Corey–Bakshi–Shibata reduction
* Corey–Fuchs reaction
* Corey–Gilman–Ganem oxidation
* Corey–Kim oxidation
* Corey-Nicolaou macrolactonization
* Corey–Posner, Whitesides–House reaction
* Corey-Seebach reaction
* Corey–Winter olefin synthesis
* Corey–Winter reaction
* Cornforth rearrangement
* Coupling reaction
* Crabbé reaction
* Craig method
* Cram's rule of asymmetric induction
* Creighton process
* Criegee reaction
* Criegee rearrangement
* Cross metathesis
* Crum Brown–Gibson rule
* Curtius degradation
* Curtius rearrangement, Curtius reaction
* Cyanohydrin reaction

## D

* Dakin reaction (aka Dakin oxidation)
* Dakin–West reaction
* Danheiser annulation
* Danheiser benzannulation
* Darapsky degradation
* Darzens condensation, Darzens–Claisen reaction, Glycidic ester condensation
* Darzens halogenation
* Darzens synthesis of unsaturated ketones
* Darzens tetralin synthesis
* Davis' reagent, Davis oxidation
* Davis–Beirut reaction
* De Kimpe aziridine synthesis
* Dehydration reaction
* Dehydrogenation
* Delépine reaction
* DeMayo reaction
* Demjanov rearrangement
* Demjanow desamination
* Dess–Martin oxidation
* Diazoalkane 1,3-dipolar cycloaddition
* Diazotisation
* DIBAL-H selective reduction
* Dieckmann condensation
* Dieckmann reaction
* Diels–Alder reaction
* Diels–Reese reaction
* Dienol–benzene rearrangement
* Dienone–phenol rearrangement
* Dimroth rearrangement
* Di-π-methane rearrangement
* Directed ortho metalation
* Doebner modification
* Doebner reaction
* Doebner–Miller reaction, Beyer method for quinolines
* Doering–LaFlamme carbon chain extension
* Dötz reaction
* Dowd–Beckwith ring expansion reaction
* Duff reaction
* Dutt–Wormall reaction
* Dyotropic reaction

## E

* E1cB elimination reaction
* Eder reaction
* Edman degradation
* Eglinton reaction
* Ehrlich–Sachs reaction
* Einhorn variant
* Einhorn–Brunner reaction
* Elbs persulfate oxidation
* Elbs reaction
* Electrochemical fluorination
* Electrocyclic reaction
* Electrophilic halogenation
* Electrophilic amination
* Elimination reaction
* Emde degradation
* Emmert reaction
* Enders SAMP/RAMP hydrazone-alkylation reaction
* Ene reaction
* Enyne metathesis
* Epoxidation
* Erlenmeyer synthesis, Azlactone synthesis
* Erlenmeyer–Plöchl azlactone and amino-acid synthesis
* Eschenmoser fragmentation
* Eschenmoser sulfide contraction
* Eschweiler–Clarke reaction
* Ester pyrolysis
* Ether cleavage
* Étard reaction
* Evans aldol
* Evans–Saksena reduction
* Evans–Tishchenko reaction

## F

* Favorskii reaction
* Favorskii rearrangement
* Favorskii–Babayan synthesis
* Fehling test
* Feist–Benary synthesis
* Fenton reaction
* Ferrario reaction
* Ferrier carbocyclization
* Ferrier rearrangement
* Fétizon oxidation
* Fiesselmann thiophene synthesis
* Finkelstein reaction
* Fischer indole synthesis
* Fischer oxazole synthesis
* Fischer peptide synthesis
* Fischer phenylhydrazine and oxazone reaction
* Fischer glycosidation
* Fischer–Hepp rearrangement
* Fischer–Speier esterification
* Fischer Tropsch synthesis
* Fleming–Tamao oxidation
* Flood reaction
* Folin–Ciocalteu reagent
* Formox process
* Forster reaction
* Forster–Decker method
* Fowler process
* Franchimont reaction
* Frankland synthesis
* Frankland–Duppa reaction
* Fráter–Seebach alkylation
* Free radical halogenation
* Freund reaction
* Friedel–Crafts acylation
* Friedel–Crafts alkylation
* Friedländer synthesis
* Fries rearrangement
* Fritsch–Buttenberg–Wiechell rearrangement
* Fujimoto–Belleau reaction
* Fujiwara–Moritani reaction
* Fukuyama coupling
* Fukuyama indole synthesis
* Fukuyama reduction

## G

* Gabriel ethylenimine method
* Gabriel synthesis
* Gabriel–Colman rearrangement, Gabriel isoquinoline synthesis
* Gallagher–Hollander degradation
* Gassman indole synthesis
* Gastaldi synthesis
* Gattermann aldehyde synthesis
* Gattermann Koch reaction
* Gattermann reaction
* Geminal halide hydrolysis
* Gewald reaction
* Gibbs phthalic anhydride process
* Gilman reagent
* Glaser coupling
* Glycol cleavage
* Goldberg reaction
* Gomberg–Bachmann reaction
* Gomberg–Bachmann–Hey reaction
* Gomberg radical reaction
* Gould–Jacobs reaction
* Graebe–Ullmann synthesis
* Grignard degradation
* Griesbaum coozonolysis
* Grignard reaction
* Grob fragmentation
* Grubbs' catalyst in Olefin metathesis
* Grundmann aldehyde synthesis
* Gryszkiewicz–Trochimowski and McCombie method
* Guareschi–Thorpe condensation
* Guerbet reaction
* Gutknecht pyrazine synthesis

## H

* Hajos–Parrish–Eder–Sauer–Wiechert reaction
* Haller–Bauer reaction
* Haloform reaction
* Halogen addition reaction
* Halohydrin formation reaction
* Hammick reaction
* Hammond principle or Hammond postulate
* Hantzsch pyrrole synthesis
* Hantzsch dihydropyridine synthesis, Hantzsch pyridine synthesis
* Hantzsch pyridine synthesis, Gattermann–Skita synthesis, Guareschi–Thorpe condensation, Knoevenagel–Fries modification
* Hantzsch–Collidin synthesis
* Harries ozonolysis
* Haworth methylation
* Haworth Synthesis
* Hay coupling
* Hayashi rearrangement
* Heck reaction
* Hegedus indole synthesis
* Helferich method
* Hell–Volhard–Zelinsky halogenation
* Hemetsberger indole synthesis
* Hemetsberger–Knittel synthesis
* Henkel reaction, Raecke process, Henkel process
* Henry reaction, Kamlet reaction
* Herz reaction, Herz compounds
* Herzig–Meyer alkimide group determination
* Heumann indigo synthesis
* Hiyama coupling
* Hydration reaction
* Hydroamination
* Hydrodesulfurization
* Hydrogenolysis
* Hydrosilylation
* Hinsberg indole synthesis
* Hinsberg oxindole synthesis
* Hinsberg reaction
* Hinsberg separation
* Hinsberg sulfone synthesis
* Hirao coupling
* Hoch–Campbell ethylenimine synthesis
* Hock rearrangement
* Hofmann bromamide reaction
* Hofmann degradation, Exhaustive methylation
* Hofmann elimination
* Hofmann Isonitrile synthesis, Carbylamine reaction
* Hofmann product
* Hofmann rearrangement
* Hofmann–Löffler reaction, Löffler–Freytag reaction, Hofmann–Löffler–Freytag reaction
* Hofmann–Martius rearrangement
* Hofmann's rule
* Hofmann–Sand reaction
* Homo rearrangement of steroids
* Hooker reaction
* Horner–Wadsworth–Emmons reaction
* Hoesch reaction
* Hosomi–Sakurai reaction
* Houben–Fischer synthesis
* Hudlicky fluorination
* Huisgen cycloaddition
* Hunsdiecker reaction, Hunsdiecker–Borodin reaction
* Hurd-Mori 1,2,3-thiadiazole synthesis
* Hurtley reaction
* Hydroboration
* Hydrocarbon cracking
* Hydrohalogenation

## I

* Indium mediated allylation
* Ing–Manske procedure
* Ipso substitution
* Ireland–Claisen rearrangement
* Isay reaction
* Ishikawa reagent
* trans-cis isomerism
* Ivanov reagent, Ivanov reaction

## J

* Jacobsen epoxidation
* Jacobsen rearrangement
* Janovsky reaction
* Japp–Klingemann reaction
* Japp–Maitland condensation
* Jocic reaction
* Johnson–Claisen rearrangement
* Johnson–Corey–Chaykovsky reaction
* Jones oxidation
* Jordan–Ullmann–Goldberg synthesis
* Julia olefination, Julia–Lythgoe olefination

## K

* Kabachnik–Fields reaction
* Kharasch–Sosnovsky reaction
* Keck asymmetric allylation
* Ketimine Mannich reaction
* Ketone halogenation
* Kiliani–Fischer synthesis
* Kindler reaction
* Kishner cyclopropane synthesis
* Knoevenagel condensation
* Knorr pyrazole synthesis
* Knorr pyrrole synthesis
* Knorr quinoline synthesis
* Koch–Haaf reaction
* Kochi reaction
* Koenigs–Knorr reaction
* Kolbe electrolysis
* Kolbe nitrile synthesis
* Kolbe–Schmitt reaction
* Kornblum oxidation
* Kornblum–DeLaMare rearrangement
* Kostanecki acylation
* Kowalski ester homologation
* Krapcho decarboxylation
* Krische allylation
* Kröhnke aldehyde synthesis
* Kröhnke oxidation
* Kröhnke pyridine synthesis
* Kucherov reaction
* Kuhn–Winterstein reaction
* Kulinkovich reaction
* Kumada coupling

## L

* Larock indole synthesis
* Lawesson's reagent
* Lebedev process
* Lehmstedt–Tanasescu reaction
* Leimgruber–Batcho indole synthesis
* Letts nitrile synthesis
* Leuckart reaction
* Leuckart thiophenol reaction
* Leuckart–Wallach reaction
* Leuckart amide synthesis
* Levinstein process
* Ley oxidation
* Lieben iodoform reaction, Haloform reaction
* Liebeskind–Srogl coupling
* Liebig melamine synthesis
* Lindlar catalyst
* Lobry de Bruyn–Van Ekenstein transformation
* Lombardo methylenation
* Lossen rearrangement
* Lucas' reagent
* Luche reduction

## M

* Maillard reaction
* Madelung synthesis
* Malaprade reaction, Periodic acid oxidation
* Malonic ester synthesis
* Mannich reaction
* Markó–Lam deoxygenation
* Markovnikov's rule, Markownikoff rule, Markownikow rule
* Marschalk reaction
* Martinet dioxindole synthesis
* McDougall monoprotection
* McFadyen–Stevens reaction
* McMurry reaction
* Meerwein arylation
* Meerwein–Ponndorf–Verley reduction
* Meisenheimer rearrangement
* Meissenheimer complex
* Menshutkin reaction
* Metal-ion-catalyzed σ-bond rearrangement
* Mesylation
* Merckwald asymmetric synthesis
* Metallo-ene reaction
* Methylation
* Meyer and Hartmann reaction
* Meyer reaction
* Meyer synthesis
* Meyer–Schuster rearrangement
* Michael addition
* Michael addition, Michael system
* Michael condensation
* Michaelis–Arbuzov reaction
* Midland Alpine borane reduction
* Mignonac reaction
* Milas hydroxylation of olefins
* Minisci reaction
* Mislow–Evans rearrangement
* Mitsunobu reaction
* Miyaura borylation
* Modified Wittig-Claisen tandem reaction
* Molisch's test
* Mozingo reduction
* Mukaiyama aldol addition (Mukaiyama reaction)
* Mukaiyama hydration
* Myers' asymmetric alkylation

## N

* Nametkin rearrangement
* Narasaka–Prasad reduction
* Nazarov cyclization reaction
* Neber rearrangement
* Nef reaction
* Negishi coupling
* Negishi zipper reaction
* Nenitzescu indole synthesis
* Nenitzescu reductive acylation
* Newman–Kwart rearrangement
* Nicholas reaction
* Niementowski quinazoline synthesis
* Niementowski quinoline synthesis
* Nierenstein reaction
* NIH shift
* Ninhydrin test
* Nitroaldol reaction
* Nitrone-olefin 3+2 cycloaddition
* Normant reagents
* Noyori asymmetric hydrogenation
* Nozaki–Hiyama–Kishi reaction
* Nucleophilic acyl substitution

## O

* Ohira–Bestmann reaction
* Olah reagent
* Olefin metathesis
* Oppenauer oxidation
* Orton rearrangement
* Ostromyslenskii reaction, Ostromisslenskii reaction
* Overman rearrangement
* Oxidative decarboxylation
* Oxo synthesis
* Oxy-Cope rearrangement
* Oxymercuration
* Oxidation of alcohols to carbonyl compounds
* Ozonolysis

## P

* Paal–Knorr pyrrole synthesis
* Paal–Knorr synthesis
* Paneth technique
* Passerini reaction
* Paternò–Büchi reaction
* Pauson–Khand reaction
* Payne rearrangement
* Pechmann condensation
* Pechmann pyrazole synthesis
* Pellizzari reaction
* Pelouze synthesis
* Peptide synthesis
* Perkin alicyclic synthesis
* Perkin reaction
* Perkin rearrangement
* Perkow reaction
* Petasis reaction
* Petasis reagent
* Peterson olefination
* Peterson reaction
* Petrenko-Kritschenko piperidone synthesis
* Pfau–Plattner azulene synthesis
* Pfitzinger reaction
* Pfitzner–Moffatt oxidation
* Phosphonium coupling
* Photosynthesis
* Piancatelli rearrangement
* Pictet–Gams isoquinoline synthesis
* Pictet–Hubert reaction
* Pictet–Spengler tetrahydroisoquinoline synthesis
* Pictet–Spengler reaction
* Piloty–Robinson pyrrole synthesis
* Pinacol coupling reaction
* Pinacol rearrangement
* Pinner amidine synthesis
* Pinner method for ortho esters
* Pinner reaction
* Pinner triazine synthesis
* Pinnick oxidation
* Piria reaction
* Polonovski reaction
* Pomeranz–Fritsch reaction
* Ponzio reaction
* Prato reaction
* Prelog strain
* Prevost reaction
* Prileschajew reaction
* Prilezhaev reaction
* Prins reaction
* Prinzbach synthesis
* Protecting group
* Pschorr reaction
* Pummerer rearrangement
* Purdie methylation, Irvine–Purdie methylation
* PUREX

## Q

* Quelet reaction

## R

* Ramberg–Bäcklund reaction
* Raney nickel
* Rap–Stoermer condensation
* Raschig phenol process
* Rauhut–Currier reaction
* Racemization
* Reductive amination
* Reductive dehalogenation of halo ketones
* Reed reaction
* Reformatskii reaction, Reformatsky reaction
* Reilly–Hickinbottom rearrangement
* Reimer–Tiemann reaction
* Reissert indole synthesis
* Reissert reaction, Reissert compound
* Reppe synthesis
* Retropinacol rearrangement
* Rieche formylation
* Riemschneider thiocarbamate synthesis
* Riley oxidations
* Ring closing metathesis
* Ring opening metathesis
* Ritter reaction
* Robinson annulation
* Robinson–Gabriel synthesis
* Robinson Schopf reaction
* Rosenmund reaction
* Rosenmund reduction
* Rosenmund–von Braun synthesis
* Roskamp reaction
* Rothemund reaction
* Rupe rearrangement
* Rubottom oxidation
* Ruff–Fenton degradation
* Ruzicka large-ring synthesis

## S

* Saegusa–Ito oxidation
* Sakurai reaction
* Salol reaction
* Sandheimer
* Sandmeyer diphenylurea isatin synthesis
* Sandmeyer isonitrosoacetanilide isatin synthesis
* Sandmeyer reaction
* Sanger reagent
* Saponification
* Sarett oxidation
* Schiemann reaction
* Schiff reaction
* Schiff test
* Schlenk equilibrium
* Schlosser modification
* Schlosser variant
* Schmidlin ketene synthesis
* Schmidt degradation
* Schmidt reaction
* Scholl reaction
* Schorigin Shorygin reaction, Shorygin reaction, Wanklyn reaction
* Schotten–Baumann reaction
* Seliwanoff's test
* Semidine rearrangement
* Semmler–Wolff reaction
* Seyferth–Gilbert homologation
* Shapiro reaction
* Sharpless asymmetric dihydroxylation
* Sharpless epoxidation
* Sharpless oxyamination or aminohydroxylation
* Shenck ene reaction
* Shi epoxidation
* Shiina esterification
* Shiina macrolactonization or Shiina lactonization
* Sigmatropic reaction
* Simmons–Smith reaction
* Simonini reaction
* Simonis chromone cyclization
* Simons process
* Skraup chinolin synthesis
* Skraup reaction
* Smiles rearrangement
* S$_N$Ar nucleophilic aromatic substitution
* S$_N$1
* S$_N$2
* S$_N$i
* Solvolysis
* Sommelet reaction
* Sonn–Müller method
* Sonogashira coupling
* Sørensen formol titration
* Staedel–Rugheimer pyrazine synthesis
* Stahl oxidation
* Staudinger reaction
* Staudinger synthesis
* Steglich esterification
* Stephen aldehyde synthesis
* Stephens-Castro coupling
* Stetter reaction
* Stevens rearrangement
* Stieglitz rearrangement
* Stille coupling
* Stobbe condensation
* Stollé synthesis
* Stork acylation
* Stork enamine alkylation
* Strecker amino acid synthesis
* Strecker degradation
* Strecker sulfite alkylation
* Strecker synthesis
* Stereocontrolled 1,2-addition to carbonyl groups
* Suzuki coupling
* Swain equation
* Swarts reaction
* Swern oxidation

## T

* Tamao oxidation
* Tafel rearrangement
* Takai olefination
* Tebbe olefination
* ter Meer reaction
* Thiele reaction
* Thiol-yne reaction
* Thorpe reaction
* Tiemann rearrangement
* Tiffeneau ring enlargement reaction
* Tiffeneau–Demjanov rearrangement
* Tischtschenko reaction
* Tishchenko reaction, Tishchenko–Claisen reaction
* Tollens reagent
* Transfer hydrogenation
* Trapp mixture
* Transesterification
* Traube purine synthesis
* Truce–Smiles rearrangement
* Tscherniac–Einhorn reaction
* Tschitschibabin reaction
* Tschugajeff reaction
* Tsuji–Trost reaction
* Tsuji–Wilkinson decarbonylation reaction
* Twitchell process
* Tyrer sulfonation process

## U

* Ugi reaction
* Ullmann reaction
* Upjohn dihydroxylation
* Urech cyanohydrin method
* Urech hydantoin synthesis

## V

* Van Leusen reaction
* Van Slyke determination
* Varrentrapp reaction
* Vilsmeier reaction
* Vilsmeier–Haack reaction
* Voight amination
* Volhard–Erdmann cyclization
* von Braun amide degradation
* von Braun reaction
* von Richter cinnoline synthesis
* von Richter reaction

## W

* Wacker–Tsuji oxidation
* Wagner-Jauregg reaction
* Wagner–Meerwein rearrangement
* Waits–Scheffer epoxidation
* Walden inversion
* Wallach rearrangement
* Weerman degradation
* Weinreb ketone synthesis
* Wenker ring closure
* Wenker synthesis
* Wessely–Moser rearrangement
* Westphalen–Lettré rearrangement
* Wharton reaction
* Whiting reaction
* Wichterle reaction
* Widman–Stoermer synthesis
* Wilkinson catalyst
* Willgerodt rearrangement
* Willgerodt–Kindler reaction
* Williamson ether synthesis
* Winstein reaction
* Wittig reaction
* Wittig rearrangement:
** 1,2-Wittig rearrangement
** 2,3-Wittig rearrangement
* Wittig–Horner reaction
* Wohl degradation
* Wohl–Aue reaction
* Wohler synthesis
* Wohl–Ziegler reaction
* Wolffenstein–Böters reaction
* Wolff rearrangement
* Wolff–Kishner reduction
* Woodward cis-hydroxylation
* Woodward–Hoffmann rule
* Wulff–Dötz reaction
* Wurtz coupling, Wurtz reaction
* Wurtz–Fittig reaction

## Y

* Yamada–Okamoto purine synthesis
* Yamaguchi esterification

## Z

* Zaitsev's rule
* Zeisel determination
* Zerevitinov determination, Zerewitinoff determination
* Ziegler condensation
* Ziegler method
* Zimmermann reaction
* Zincke disulfide cleavage
* Zincke nitration
* Zincke reaction
* Zincke–Suhl reaction
* Zinin reduction