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Lecture 4 - Ethers react slowly with O 2 to form...

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1 Reading for Monday ± Chapter 16: 16.1-16.7 ± (16.3 and 16.4 are a review of resonance; cover these on your own) Mon. 6:00-7:30 pm MAL 3092 Tues. 2:30-4:00 PM MAL 2007 Wed. 5:00-6:30 PM MAL 2001 Thurs. 9:30-10:50 AM MAL 1003 Sat. 11:00 AM-1:00 PM MAL 2007 CHEM 626 PLUS Sessions First ARIS Quiz ± Available Wednesday Feb. 2 ± Due at 11:59 pm on the evening of Sunday, Feb. 6 Chapter 15 Radical Reactions Radical Addition of HBr to an Alkene (15.13) Usually initiated by homolysis of a peroxide Gives Anti-Markovnikov Product Radical Addition of HBr to an Alkene: Some History (15.13) Addition of HBr to alkenes often performed in ether solvents
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Unformatted text preview: Ethers react slowly with O 2 to form hydroperoxides (autoxidation) • It was discovered in 1933 that the presence of these or other peroxides caused a change in mechanism, from ionic to radical 2 Polymers and Polymerization (15.14) • Polymers: Large molecules made up of repeating units of small molecules (monomers) • Polymerization: The joining together of monomers to make polymers • We’ll focus for now on radical polymerization Polymers and Polymerization (15.14) • Termini (ends) comprise only a tiny fraction of a polymer, and can be ignored when representing the structure...
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Lecture 4 - Ethers react slowly with O 2 to form...

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