• Dakin reaction
• Dakin-West reaction
• Danheiser Annulation
• Darapsky degradation
• Darzens condensation, Darzens-Claisen reaction, Glycidic ester condensation
• Darzens synthesis of unsaturated ketones
• Darzens tetralin synthesis
• Dehydration reaction
• Dehydrogenation
• Delepine 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-pi-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