This course is designed to explain the mechanism of organic reactions and to give juniors in chemistry the ability to understand modern organic chemistry. Topics include: Carbanions, Amines, Phenols, Carbonyl, Compounds, Molecular Orbitals, Aromatic Compounds, Heterocyclic Compounds, Macromolecules, Fats, Carbohydrates. Amino Acids, and Molecular Biology. Topical Prerequisites: formation and utilization of carbaions, structure and characterization of amino acids, nucleophilic aromatic substitution of arylhalides, molecular orbital theory and orbital symmetry, structure and chemical properties of heterocyclic compounds, synthesis and properties of polymers, introduction of carbohydrates.