Lecture1 - 318N Krische Lecture 1 Tu Course Introduction...

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Today, we go over the course syllabus, with attention to exam dates, course policies and other administrative items. Please note that 1 H, 13 C NMR and IR spectroscopy were covered in Professor Krische’s section of 318M last semester. If you were not in Professor Krische’s section of 318M last semester or have not been exposed to these topics you should reconsider enrollment in this course. We now begin the chapter(s) covering aldehydes and ketones. Structure begets reactivity : C=O double bond is polarized such that the oxygen bears a partial negative charge and the carbon bears a partial positive charge. This naturally follows from the electronegativities of carbon and oxygen (the latter being more electronegative). The polarity/dipole of the C=O double bond is reflected by a zwitterionic resonance structure. In accordance with the polarization of the C=O double bond, electrophiles react at oxygen and
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Lecture1 - 318N Krische Lecture 1 Tu Course Introduction...

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