Definition
In organic chemistry, an aldehyde is an organic compound containing a functional group with the structure R−CH=O. The functional group itself can be referred to as an aldehyde but can also be classified as a formyl group. Aldehydes are a common motif in many chemicals important in technology and biology.
Related concepts
1,3,5-Trioxane1-Phosphaallenes2,4-dinitrophenylhydrazine2-Iodoxybenzoic acid2-ethylhexanolAcetalAcetaldehydeAcetalisationAcetic acidAcetoxy groupAcetyl groupAcetylideAcidAcid catalysisAcroleinAcryloyl groupAcyl chlorideAcyl groupAcyl halideAcyloinAddition reactionAlcohol (chemistry)Alcohol oxidationAldehyde dehydrogenaseAldehyde reductionAldolAldol condensationAldol reactionAldoseAliphatic compoundAlkaneAlkeneAlkoxy groupAlkylAlkyl halideAlkylimino-de-oxo-bisubstitutionAlkyneAllenesAllyl groupAlpha and beta carbonAlpha hydrogenAlpha hydroxy acidAmideAmide (functional group)Amide reductionAmidesAmidineAmineAmmoniaAromatic hydrocarbonArsenicArsinic acidArsoleArsonic acid (functional group)ArylAutoxidationAzo compoundBakeliteBarbier reactionBase (chemistry)BenzaldehydeBenzeneBenzoyl groupBenzyl groupBiotransformationBisulfiteBond cleavageBorinic acidBoronBoronic acidButaneButyl groupButyraldehydeCancerCannizzaro reactionCarbamateCarbamic acidCarbeneCarbinolamineCarbonCarbon dioxideCarbonyl alpha-substitution reactionsCarbonyl groupCarbonyl oxidation with hypervalent iodine reagentsCarbonyl reductionCarbonylationCarboxyl groupCarboxylic acidCarboxylic acidsCarboxylic anhydrideCatalysisChanel No. 5Chemical classificationChemical nomenclatureChloral hydrateChlorosilaneChromic acidChromium trioxideCilantroCinnamaldehydeCitralCondensation reactionCopper(I) oxideCorey–Fuchs reactionCrotyl groupCumuleneCyanate esterCyanideCyanohydrinCycloadditionCyclopropylDIBAL-HDecarbonylationDehydrogenatedDess–Martin periodinaneDiacidDicarbonylDichromateDimethyl sulfoxideDiolDioxiraneDisproportionationDistillationDisulfideElectron withdrawing groupElimination reactionEnamineEnolEnol etherEnolateEnolatesEnzymeEpoxideEssential oilEsterEthanolEtherEthyl groupEthylenedioxyFehling's reagentFehling's solutionFehling's testFluoroethylFormaldehydeFormic acidFormylation reactionFunctional groupFurfuralGanem oxidationGeminalGeminal halide hydrolysisGlucoseGlutaraldehydeGlycolaldehydeGlyoxalGreen chemistryGrignard reagentHaloalkaneHalocarbonHeart diseaseHemiacetalHemiaminalHexahydrotriazineHofmann rearrangementHydrateHydrazideHydrazineHydrazinesHydrazoneHydroacylationHydrocarbonHydroformylationHydrogenHydrogen chlorideHydrogen cyanideHydrogenationHydrolysisHydroperoxideHydrosilaneHydroxylHydroxylamineHypervalent organoiodine compoundsIR spectroscopyIUPACIUPAC nomenclature of inorganic chemistryIUPAC nomenclature of organic chemistryImidateImideImineIminiumIodaneIsobuteneIsocyanateIsocyanideIsothiocyanateIsovaleraldehydeJerry MarchJohnson–Corey–Chaykovsky reactionJustus von LiebigKeteneKetoneKetonesKeto–enol tautomerismKornblum oxidationLatinLatin languageLilialLux-Flood acidLyophilizedMalondialdehydeManganese dioxideMcFadyen-Stevens reactionMelamineMetallolesMethacroleinMethanalMethanolMethine groupMethoxy groupMethoxymethylenetriphenylphosphineMethyl groupMethylene bridgeMethylene diphenyl diisocyanateMethylene groupMethylenedioxyMeyers synthesisNONOateNef reactionNeurodegenerationNitrate esterNitreneNitric acidNitrileNitrite esterNitro compoundNitrogenNitrosoNitroxylNozaki–Hiyama–Kishi reactionNucleophileNucleophilic additionOhira–Bestmann reactionOne-pot synthesisOpsinOrbital hybridisationOrganic SynthesesOrganic chemistryOrganic compoundOrganic peroxidesOrganic redox reactionOrganic thiocyanatesOrganolithium reagentOrganometallic chemistryOrganophosphateOrganophosphineOrganopolonium chemistryOrganosilicon chemistryOrganostannane additionOrthoesterOxalic acidOxazineOxidation with chromium(VI) complexesOxidizing agentOximeOxo-Diels–Alder reactionOxo alcoholOxoammonium-catalyzed oxidationOxygenOzonolysisPKaPentyl groupPerchlorate esterPerfumePersulfidePhenolPhenyl groupPhosphaalkenePhosphaalkynePhosphinatePhosphine oxidePhosphite esterPhosphodiesterPhosphonatePhosphonitePhosphoniumPhosphoramidesPhosphorusPhotoreceptor proteinPhthalaldehydePicometerPinacol coupling reactionPlasticizerPlasticizersPolar moleculePoloniumPolonium hydridePolyolsPolyurethanePotassium dichromatePotassium permanganatePrimary (chemistry)Primary alcoholPrins reactionPropenylPropionaldehydePropyl groupPropyleneProton nuclear magnetic resonancePseudoacidPyranPyridinePyridinium chlorochromatePyridoxalQuaternary ammonium cationReaction intermediateReductoneResonance (chemistry)RetinalRetinaldehydeRosenmund reactionSaturated and unsaturated compoundsSelenenic acidSelenideSeleninic acidSeleniumSelenolSelenonic acidSeloneSemialdehydeSide chainSilaneSilanolSilanoneSilatraneSilicateSiliconSiloxaneSiloxideSilver nitrateSilyl etherSinglet oxygenSodium aluminium hydrideSodium borohydrideSodium hydroxideStephen aldehyde synthesisSteric effectsStoichiometrySuccindialdehydeSuccinic acidSulfenic acidSulfenyl chlorideSulfinic acidSulfinylamineSulfonamideSulfoneSulfonic acidSulfoniumSulfonium-based oxidation of alcohols to aldehydesSulfoxideSulfurSwern oxidationTEMPOTakai reactionTautomerTelluride (chemistry)TelluriumTelluroketoneTellurolTetrazoleThermal decompositionThia-crown etherThialThioesterThioetherThioketoneThiolThionoesterThiosulfinateThiosulfonateThioxanthateTin(II) chlorideTollens' reagentTolualdehydeTolueneToxicityTrametes hirsutaTransfer hydrogenationTriazoleTrichloromethyl groupTrifluoromethoxy groupTrifluoromethylUreaVanillinVapor pressureVicinal diolVilsmeier-Haack reactionVinyl alcoholVinyl groupVinyl halideVinyl iodide functional groupWacker processWittig reactionWolff–Kishner reductionWork-up (chemistry)XanthateYlideYnoneZincke aldehydeZincke reaction
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