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Unformatted text preview: starting material, meta-xylene, is a di-substituted xylene. Your challenge is to interpret your IR and determine which of the three isomeric products….the “1,2,3”, “1,2,4”, or “1,3,5”….you made. First, draw all three below: IR is an excellent tool for determining the substitution pattern on a benzene ring; see for example Table 29.1 in Williamson. This is an exception to the rule that we don’t look in the fingerprint region for structural info. Using the info in this table, your basic knowledge of IR, and the spectrum of meta-xylene, answer the following questions: 1) Do you see what appears to be significant unreacted xylene in your isolated product ? How can you tell? 2) Which isomeric product do you think you made? What is your basis for your conclusion ? Refer to specific features of your IR....
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