Organic Chemistry 2
This page covers the topics and content covered in a SECOND-semester undergraduate Organic Chemistry course (commonly referred to as Orgo or O-Chem).
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Course Topics
The topics listed below frequently appear in a second-semester undergraduate Organic Chemistry course (commonly referred to as Orgo or O-Chem). These review pages are built on the principle that mastery of O-Chem comes from active problem-solving rather than passive reading. Instead of dense textbook chapters or lecture transcripts, these pages focus on building intuition for organic mechanisms and reactivity by guiding you through the standard problem types you'll face.
Conjugation and Dienes
Conjugated systems, resonance, and stability; Electrophilic addition to conjugated dienes; The Diels–Alder reaction (cycloaddition mechanism)
Aromatic Compounds and Reactivity
Structure and stability of benzene (aromaticity criteria); Electrophilic aromatic substitution (EAS) mechanisms; Substituent effects (activating/deactivating groups, ortho/para/meta directors); Nucleophilic aromatic substitution (if time allows)
Carbonyl Chemistry: Aldehydes and Ketones
Nomenclature, structure, and properties; Nucleophilic addition mechanisms (e.g., formation of hydrates, hemiacetals, acetals); Oxidation and reduction (e.g., Tollens test, PCC, NaBH₄, LiAlH₄); Imine and enamine formation
Carboxylic Acids and Their Derivatives
Nomenclature and properties of acids, esters, amides, acid chlorides, anhydrides; Nucleophilic acyl substitution reactions; Saponification, transesterification, and hydrolysis of amides; Interconversion of acid derivatives
Enolates and Enolate Reactions
Keto–enol tautomerism; Aldol condensation, crossed aldol reactions; Claisen condensation, Dieckmann condensation; Michael addition and Robinson annulation
Amines and Nitrogen-Containing Compounds
Nomenclature and basic properties of amines; Basicity, alkylation, and formation of amides; Reductive amination and other amine synthesis methods
Advanced Spectroscopy
More detailed ¹H NMR (complex splitting patterns, coupling constants); ¹³C NMR basics (chemical shifts, DEPT); Advanced techniques (possibly 2D NMR, if time allows); Expanded use of IR, UV-Vis, and Mass Spectrometry in structure elucidation
Carbohydrates, Amino Acids, and Other Biomolecules (Introduction)
Basic structures of monosaccharides and disaccharides (if covered); Fischer and Haworth projections; Amino acid structure and properties; peptide bonds; Overview of lipids and nucleic acids (varies by course)
Synthesis Strategies
Multi-step synthesis combining reactions from both semesters; Retrosynthetic analysis (disconnection approach); Protecting groups and strategic reaction pathways
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