"Lec 29 - Preparing Single Enantiomers and the Mechanism of Optical Rotation" Freshman Organic Chemistry (CHEM 125) Within a lecture on biological resolution, the synthesis of single enantiomers, and the naming and 3D visualization of omeprazole, Professor Laurence Barron of the University of Glasgow delivers a guest lecture on the subject of how chiral molecules rotate polarized light. Mixing wave functions by coordinated application of light's perpendicular electric and magnetic fields shifts electrons along a helix that can be right- or left-handed, but so many mixings are involved, and their magnitudes are so subtle, that predicting net optical rotation in practical cases is rarely simple. 00:00 - Chapter 1. Introduction: Challenges in Isolating Enantiomers Despite Optical Activity 06:09 - Chapter 2. Barron: A Sketch of Lord Kelvin and Chirality 12:35 - Chapter 3. Natural and Magnetic Optical Rotation 20:49 - Chapter 4. Understanding Optical Activity via the Carbonyl Chromophore 37:22 - Chapter 5. Who Cares? Chiral Switches in Life and Drugs Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses This course was recorded in Fall 2008.
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