Ranked #1
32 - Stereotopicity and Baeyer Strain Theory
32 - Stereotopicity and Baeyer Strain Theory
Why ethane has a rotational barrier is still debatable. Analyzing conformational and configurational stereotopicity rela... Read more
5 Oct 2009
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Ranked #2
31 - Preparing Single Enantiomers and Conformational Energy
31 - Preparing Single Enantiomers and Conformational Energy
After mentioning some legal implications of chirality, the discussion of configuration concludes using esomeprazole as a... Read more
5 Oct 2009
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Ranked #3
30 - Esomeprazole as an Example of Drug Testing and Usage
30 - Esomeprazole as an Example of Drug Testing and Usage
The chemical mode of action of omeprazole is expected to be insensitive to its stereochemistry, making clinical trials o... Read more
5 Oct 2009
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Ranked #4
29 - Preparing Single Enantiomers and the Mechanism of Optical Rotation
29 - Preparing Single Enantiomers and the Mechanism of Optical Rotation
Within a lecture on biological resolution, the synthesis of single enantiomers, and the naming and 3D visualization of o... Read more
5 Oct 2009
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Ranked #5
28 - Stereochemical Nomenclature; Racemization and Resolution
28 - Stereochemical Nomenclature; Racemization and Resolution
Determination of the actual atomic arrangement in tartaric acid in 1949 motivated a change in stereochemical nomenclatur... Read more
5 Oct 2009
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Ranked #6
27 - Communicating Molecular Structure in Diagrams and Words
27 - Communicating Molecular Structure in Diagrams and Words
It is important that chemists agree on notation and nomenclature in order to communicate molecular constitution and conf... Read more
5 Oct 2009
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Ranked #7
26 - Van't Hoff's Tetrahedral Carbon and Chirality
26 - Van't Hoff's Tetrahedral Carbon and Chirality
With his tetrahedral carbon models van't Hoff explained the mysteries of known optical isomers possessing stereogenic ce... Read more
5 Oct 2009
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Ranked #8
25 - Models in 3-D Space (1869-1877); Optical Isomers
25 - Models in 3-D Space (1869-1877); Optical Isomers
Despite cautions from their conservative elders, young chemists like Paternó and van't Hoff began interpreting molecular... Read more
5 Oct 2009
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Ranked #9
24 - Determining Chemical Structure by Isomer Counting (1869)
24 - Determining Chemical Structure by Isomer Counting (1869)
Half a century before direct experimental observation became possible, most structures of organic molecules were assigne... Read more
5 Oct 2009
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Ranked #10
22 - Radical and Type Theories (1830-1850)
22 - Radical and Type Theories (1830-1850)
Work by Wöhler and Liebig on benzaldehyde inspired a general theory of organic chemistry focusing on so-called radicals,... Read more
5 Oct 2009
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Ranked #11
23 - Valence Theory and Constitutional Structure (1858)
23 - Valence Theory and Constitutional Structure (1858)
Youthful chemists Couper and Kekulé replaced radical and type theories with a new approach involving atomic valence and ... Read more
5 Oct 2009
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Ranked #12
21 - Berzelius to Liebig and Wöhler (1805-1832)
21 - Berzelius to Liebig and Wöhler (1805-1832)
The most prominent chemist in the generation following Lavoisier was Berzelius in Sweden. Together with Gay-Lussac in Pa... Read more
5 Oct 2009
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Ranked #13
20 - Rise of the Atomic Theory (1790-1805)
20 - Rise of the Atomic Theory (1790-1805)
This lecture traces the development of elemental analysis as a technique for the determination of the composition of org... Read more
5 Oct 2009
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Ranked #14
19 - Oxygen and the Chemical Revolution (Beginning to 1789)
19 - Oxygen and the Chemical Revolution (Beginning to 1789)
This lecture begins a series describing the development of organic chemistry in chronological order, beginning with the ... Read more
5 Oct 2009
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Ranked #15
18 - Amide, Carboxylic Acid and Alkyl Lithium
18 - Amide, Carboxylic Acid and Alkyl Lithium
This lecture completes the first half of the semester by analyzing three functional groups in terms of the interaction o... Read more
5 Oct 2009
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