- Ionic bonds
- Covalent bonds and Lewis structures
- Formal charges
- Common bonding patterns in organic structures
- Using the 'line structure' convention
- Constitutional isomers
- The Index of Hydrogen Deficiency
- Common functional groups in organic compounds
- Naming organic compounds
- Abbreviated organic structures
- Formation of sigma bonds: the H2 molecule
- Hybrid orbitals: sp3 hybridization and tetrahedral bonding
- Formation of pi bonds: sp2 and sp hybridization
- The valence bonding picture in carbocations, carbanions, and carbon free radicals
- Another look at the H2 molecule: bonding and antibonding sigma molecular orbitals
- MO theory and pi bonds: conjugation
- Aromaticity
- The meaning of resonance contributors: benzene and its derivatives
- Resonance contributors of the carboxylate group
- Rules for drawing resonance structures
- Major vs minor resonance contributors - four more rules to follow
- More examples of resonance: peptide bonds, enolates, and carbocations
- Dipoles
- Ion-ion, dipole-dipole and ion-dipole interactions
- van der Waals forces
- Hydrogen bonds
- Solubility
- Illustrations of solubility concepts - metabolic intermediates, lipid bilayer membranes, soaps and detergent
- Boiling points and melting points
- The melting behavior of lipid structures
- Conformations of ethane
- Conformations of butane
- Introduction to sugars and other cyclic molecules
- Ring size
- Conformations of glucose and other six-membered ring structures
- Conformations of pentose and other five-membered ring structures
- The importance of conformation in organic reactivity
- Compounds with multiple stereocenters
- Meso compounds
- Stereoisomerism of alkenes
- Prochiral substituents on tetrahedral carbons
- Carbonyl and imine carbons as prochiral centers
- The electromagnetic spectrum
- Molecular spectroscopy – the basic idea
- Electronic transitions
- Looking at UV-vis spectra
- Applications of UV spectroscopy in organic and biological chemistry
- The basics of mass spectrometry
- Looking at mass spectra
- Gas Chromatography - Mass Spectrometry
- Mass spectrometry of proteins - applications in proteomics
- NMR-active nuclei
- Nuclear precession, spin states, and the resonance condition
- The basics of an NMR experiment
- The chemical shift
- Signal integration
- Diamagnetic shielding and deshielding
- Diamagnetic anisotropy
- Hydrogen-bonded protons
- The source of spin-spin coupling
- Coupling constants
- Complex coupling
- The basics of 13C-NMR spectroscopy
- 13C-NMR in isotopic labeling studies
- acid-base (proton transfer) reaction
- one-step nucleophilic substitution reaction (SN2)
- Two-step nucleophilic substitution reaction (SN1)
- Amino acids and peptide bonds
- Visualizing protein structure: X-ray crystallography
- The four levels of protein structure
- The molecular forces that hold proteins together
- The active site
- Transition state stabilization
- Site-directed mutagenesis
- Enzyme inhibition
- Catalysts in the laboratory
- The Brønsted-Lowry definition of acidity
- The Lewis definition of acidity
- Defining Ka and pKa
- Using pKa values to predict reaction equilibria
- pKa and pH: the Henderson-Hasselbalch equation
- Periodic trends
- The resonance effect
- The inductive effect
- The acidity of phenols
- The basicity of nitrogen-containing groups: aniline, imines, pyridine, and pyrrole
- Associative nucleophilic substitution: the SN2 reaction
- Dissociative nucleophilic substitution: the SN1 reaction
- Nucleophilic substitutions occur at sp3-hybridized carbons
- What makes a nucleophile?
- Protonation states and nucleophilicity
- Periodic trends in nucleophilicity
- Resonance effects on nucleophilicity
- Steric effects on nucleophilicity
- Steric effects on electrophilicity
- Stability of carbocation intermediates
- What makes a good leaving group?
- Leaving groups in biochemical reactions
- Synthetic parallel - conversion of alcohols to alkyl halides, tosylates and mesylates
- SN1 or SN2? Predicting the mechanism.
- Epoxide structure
- Epoxide ring-opening reactions - SN1 vs SN2, regioselectivity, and stereoselectivity
- SAM methyltransferase
- Synthetic parallel – the Williamson ether synthesis
- The biological relevance of the protein prenyltransferase reaction
- Determining the mechanism of protein prenyltransferase with fluorinated substrate analogs
- The zinc-thiolate interaction in protein prenyltransferase - 'tuning' the nucleophile
- Hydrolysis of stearic acid epoxide: investigating the mechanism with kinetic isotope effect experiments
- Fosfomycin - an epoxide antibiotic
- Nomenclature and abbreviations
- Acid constants and protonation states
- Bonding in phosphines and phosphates
- Phosphoryl transfer reactions - the general picture
- Phosphoryl transfer reactions - associative, addition-elimination, or dissociative?
- ATP - the principle phosphoryl group donor
- Monophosphorylation of alcohols
- Diphosphorylation of alcohols
- Phosphorylation of carboxylates
- Generation of nucleotide phosphates
- Regeneration of ATP from ADP
- Phosphate diesters as the backbone for DNA and RNA
- The chemistry of genetic engineering
| A. The general picture B. Simple sugars are hemiacetals and hemiketals A. Glycosidic bonds revisited B. Synthetic parallel: cyclic acetals/ketals as 'protecting groups' for ketones and aldehydes A. Imines-the general picture B. Pyridoxal phosphate coenzyme links to enzymes by a Schiff base C. Schiff base formation in aldolase reactions A: Carboxylic acid derivatives and acyl groups B: The nucleophilic acyl substitution reaction C: The relative reactivity of carboxylic acid derivatives A: Glutamine synthetase B: Asparagine synthetase C: Glycinamide ribonucleotide synthetase D: Synthetic parallel - activated carboxylic acids in the lab A: Introduction to thioesters and Coenzyme A B: Activation of fatty acids by coenzyme A - a thioesterification reaction C: Transfer of fatty acyl groups to glycerol: a thioester to ester substitution D: More transthioesterification reactions E: Hydrolysis of thioesters A: Nonenzymatic esterification: synthesis of ‘banana oil’ B: Nonenzymatic ester hydrolysis and the soap-making process C: Enzymatic ester hydrolysis: acetylcholinesterase and sarin nerve gas D: More enzymatic ester hydrolysis: lipase, the resolution of enantiomers, and dehalogenation E: Transesterification: the chemistry of aspirin and biodeisel A: Formation of peptide bonds on the ribosome B: Hydrolysis of peptide bonds: HIV protease C: The chemical mechanism of penicillin - Keto-enol tautomerization
- Imine/enamine tautomerization
- Carbonyl isomerization
- Stereoisomerization at chiral carbons
- The general mechanism for an aldol reaction
- Typical aldolase reactions: three variations on a theme
- Going backwards: the retroaldol reaction
- Going both ways: transaldolase
- Claisen condensations
- Retro-Claisen cleavages
- Enolates as nucleophiles in SN2 displacements
- The metabolic context of carboxylation and decarboxylation
- The carboxylation mechanism of Rubisco
- Decarboxylation
- Lab reactions with enolate /enamine intermediates
- The Wittig reaction
- Terminal alkynes as carbon nucleophiles
- Grignard, Gilman, and organolithium reagents
- Overview of Michael addition and beta-elimination mechanisms
- Stereochemistry of Michael additions and beta-eliminations
- NMR experiments to determine the stereochemistry of a Michael addition
- More examples of elimination and addition reactions
Section 14.2: Variations on the Michael reaction - Cis/trans alkene isomerization
- Nucleophilic aromatic substitution
- Synthetic parallel - Michael addition reactions in the laboratory
- E1 and E2 reactions in the laboratory
- Enzymatic E1 and E2 reactions
- PLP and the Schiff-base linkage to lysine
- PLP-dependent amino acid racemases
- PLP-dependent decarboxylation
- PLP-dependent retroaldol reactions
- PLP-dependent transaminase reactions (aspartate aminotransferase)
- PLP-dependent β-elimination and β-substitution reactions
- PLP-dependent γ-elimination and γ-substitution reactions
- Altering the course of a PLP reaction through site-directed mutagenesis
- The benzoin condensation reaction
- The transketolase reaction
- Pyruvate decarboxylase
- Synthetic parallel - carbonyl nucleophiles via dithiane anions
- Transition state geometry of E2 reactions
- Transition state geometry of PLP-dependent reactions
- The general picture
- The regiochemistry of electrophilic addition
- Enzymatic electrophilic additions
- Synthetic parallel - electrophilic additions in the laboratory
- Alkene isomerization
- Substitution by electrophilic addition/elimination
- The general picture
- Some representative enzymatic electrophilic aromatic substitution reactions
- Friedel-Crafts reactions
- Ring directing effects in SEAr reactions
- Hydride and alkyl shifts
- Enzymatic reactions with carbocation rearrangement steps
- The acyloin, pinacol, and Hoffman rearrangements (isoleucine biosynthesis).
- Nicotinamide adenine dinucleotide - a hydride transfer coenzyme
- Carbonyl hydrogenation and alcohol dehydrogenation - the general picture
- Stereochemistry of carbonyl hydrogenation and alcohol dehydrogenation
- Examples of redox reactions involving alcohols, carbonyl groups, and imines
- Alkene hydrogenation in fatty acid biosynthesis
- The flavin coenzymes
- Alkane dehydrogenation in fatty acid degradation
- More examples of enzymatic alkene hydrogenation
- NADH and FADH2 as carriers of hydrides from fuel molecules to water
- The source of NADPH for reductive biosynthesis
- Enzymatic halogenation
- Synthetic parallel - halogenation of alkenes in the lab
- Disulfide bridges in proteins
- The role of disulfides in the pyruvate dehydrogenase reaction
- Metal hydride reducing agents
- Catalytic hydrogenation and the trans fat issue
- Reduction of carbonyl carbons to methylene
- Laboratory oxidation reactions
- The geometry and relative stability of carbon radicals.
- The diradical character of triplet oxygen
- The three phases of radical chain reactions
- Radical halogenation in the lab
- Useful polymers formed by radical chain reactions
- Destruction of the ozone layer by CFC radicals
- Harmful radical species in cells and natural antioxidants
- Hydroxylation of alkanes
- Reductive dehydroxylation of alcohols
- Radical mechanisms for flavin-dependent reactions
Table 1: Some characteristic absorption frequencies in IR spectroscopy Table 2: Typical values for 1H-NMR chemical shifts Table 3: Typical values for 13C-NMR chemical shifts Table 4: Typical coupling constants in NMR Table 5: The 20 common amino acids Table 6: Structures of common coenzymes Table 7: Representative acid constants Table 8: Some common laboratory solvents, acids, and bases Table 9: Examples of common functional groups in organic chemistry |
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