problem_set_xi_answers - CHEM 302 Organic Chemistry I...

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CHEM 302 Organic Chemistry I Problem Set XI Chapter 11 Answers 1) Suggest reasonable ways to encouraging the formation of either CH 3 Cl or CCl 4 from methane in a photochemical chlorination reaction. In order to form reasonably good amounts of methyl chloride (CH 3 Cl) in a photochemical chlorination, one needs to have the ratio of methane to chlorine be very, very large. This high ratio nearly assures that, statistically, a chlorine molecule will only encounter a methyl radical, and that the concentration of methyl chloride (relative to Cl 2 ) never gets very high. In the other case, the ratio needs to be the reverse: chlorine to methane needs to be high. In that way, a chlorine atom will, statistically, encounter only chlorinated products until all the hydrogen atoms have been replaced 2) Sulfuryl chloride, SO 2 Cl 2 , is a commonly used reagent for the chlorination of alkanes. These reactions require the presence of a free-radical initiator, such as benzoyl peroxide or simply ultraviolet light. Suggest a mechanism for the monochlorination of neopentane in the presence of ultraviolet light by sulfuryl chloride. (show initiation and propagation steps only): + SO 2 Cl 2 h !
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This note was uploaded on 04/09/2010 for the course CHEM 302 taught by Professor Myers during the Fall '09 term at Simons Rock.

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problem_set_xi_answers - CHEM 302 Organic Chemistry I...

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