Reactions — G
- Gabriel Synthesis
- Gabriel−Colman Rearrangement
- Gassman Indole Synthesis
- Gassman Isatin Synthesis
- Gattermann−Koch Reaction
- Gattermann−Koch Reaction (Modified)
- Gewald Aminothiophene Synthesis
- Ghosez Cyclization
- Gilman–Speeter Reaction
- Glaser Coupling
- Gomberg−Bachmann Reaction
- Gould−Jacobs Reaction
- Graebe–Ullmann Reaction
- Grignard Reaction
- Grob Fragmentation
- Guareschi−Thorpe Condensation
- Guerbet Reaction