Reactions — S
- Saegusa Indole Synthesis
- Saegusa Oxidation
- Sakurai Allylation Reaction
- Sandmeyer Isatin Synthesis
- Sandmeyer Reaction
- Schmidt Glycosidation
- Schmidt Rearrangement
- Schmidt Rearrangement (Intramolecular)
- Schmittel Cyclization
- Schöllkopf Amino Acid Synthesis
- Schöllkopf Oxazole Synthesis
- Selenoxide Elimination
- Semmler–Wolff Aromatization
- Serini Reaction
- Shapiro Reaction
- Sharpless Asymmetric Amino-Hydroxylation
- Sharpless Asymmetric Dihydroxylation
- Sharpless Asymmetric Epoxidation
- Sharpless Olefin Synthesis
- Shia Oxidation
- Simons−Smith Reaction
- Skraup Quinoline Synthesis
- Smiles Rearrangement
- Sommelet Reaction
- Sommelet−Hauser Rearrangement
- Sonogashira Reaction
- Staudinger Ketene Cycloaddition
- Staudinger Reduction
- Stephen Aldehyde Synthesis
- Stetter Reaction
- Stevens Rearrangement
- Stille Coupling
- Stille−Kelly Reaction
- Still−Gennari−Horner−Emmons Reaction
- Stobbe Condensation
- Strecker α-Amino Acid Synthesis
- Sugasawa Indole Synthesis
- Sundberg Indole Synthesis
- Suzuki Miyaura Coupling
- Swern Oxidation