PPT-Free Radical Reactions

Free Radicals Chain Free Radical Reactions Nonchain Free Radical Reactions Miscellaneous Free Radical Reactions Chapter Five Free Radicals Properties of free radicals 1 One or more unpaired electrons. Robert B. Grossman. University . of . Kentucky. Professor of Chemistry. Synthetic. . Organic Chemistry. 1987. B.A., Princeton University. 1992. Ph. D., Massachusetts Institute of Technology. 1992-1994. Course objectives for chapter:. Be able to identify radicals. Rank stability of radicals as a function of . substituents. (and understand origin of phenomenon based on molecular orbital theory). Understand how their formation relates to bond dissociation energies.. Free . Radicals. Free radicals form when bonds break . homo. lytically. Note the single-barbed or fishhook arrow used to show the electron movement. Free . Radicals. Recall the orbital hybridization in carbocations and . In general, we look at what occurs and try to learn how it happens. Common patterns describe the changes. Addition reactions – two molecules . combine. Elimination reactions – one molecule splits into two. chapter. . 9. B Vitamins Important in Energy Metabolism. 10. Antioxidant Nutrients. chapter. Prof Jennifer Broxterman, RD, . MSc. FN3373: . Nutrition for Physical Activity. Lecture. . 9. Antioxidants. the . National Science Foundation . (. CHE-0910826).. Introduction and History. Polar Cycloaddition Reactions. References. Acknowledgements. Electrophilic Additions. Beyond FMO Theory: An Electron Transfer Model. of Alkenes: Addition Reactions. Disparlure: sex attractant of the female gypsy moth.. (A type of . pheromone.. ). 2. I. Hydrogenation of Alkenes. Addition. Reactions. oleic acid. (unsaturated). stearic acid. Fragrances and Skin Care. Essential Oils. Essential oils are the concentrated extracts of volatile, non-water-soluble aroma compounds from plants. .. Essential . oils are widely used in perfumes, cosmetic products, cleaning products and as . . Polymerization . can proceed according to two different mechanisms, referred to as chain-growth and step-growth polymerization. . S. tep. -growth polymerization. Step-growth polymers, also called condensation . t. Alkanes have only single, covalent, non-polar bonds. Alkanes are relatively inert to most chemical reagents. Alkanes are also called . paraffins. (“little affinity”). 1. Combustion Reaction. Dr. Clower. CHEM 2411. Spring 2014. McMurry. (8. th. ed.) sections 6.1, 6.2, 6.4-6, 6.8-10, 7.10, 10.8. Organic Reactions. Types of Reactions:. Addition. Elimination. Substitution. Rearrangement. Oxidation. NameYuji Naito Born Fukui, Japan – January 18, 1958 Citizenship Japanese Marital Status: Married, Two children Visiting Professor, Department of Molecular and Cellular reaction with another free radical in the system to produce polymer molecule(s).. Termination can occur by the reaction of the polymer radical with initiator radicals. (Equation 2.14). This type of termination process is unproductive and can be. Chain Free Radical Reactions. Nonchain. . Free Radical . Reactions. Miscellaneous . Free Radical Reactions. . Chapter Five. Free Radicals. Properties of free radicals. 1. One or more unpaired electrons..