There are several types of organocatalysts commonly used in reactions:
1. Proline and its derivatives: These are popular in asymmetric aldol reactions. 2. Thioureas: Effective in enhancing reactions through hydrogen bonding. 3. Amine Catalysts: Used in a variety of transformations including aldol and Mannich reactions. 4. N-Heterocyclic Carbenes (NHCs): Catalyze umpolung reactions, where the polarity of a functional group is reversed.
