CHEM 270-16S E4.pdf - CHEM 270 Exam 4 Name Section 1(6 Give...

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CHEM 270 Name _______________________________________ Section _____ April 29, 2016 Exam 4 1. (6) Give a structure for the following IUPAC name. (E, S)-3,5-dichloro-1,4-octadien-6-yne 2. (10) Provide a detailed mechanism (show electron-pair movement by a curly arrow) showing the regio- and stereochemistry for the products of the following reaction. 3. (12) Predict and explain the relative reactivities of the following alkenes when treated with HCl/Et 2 O. NBS DMSO, H 2 O Br OH HO Br Cl Cl
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2 4. (12) We have added several reactions to our reaction palette that affords us the ability to control stereo or regiochemistry in manipulating molecules. Provide reagents to accomplish any three series of the following chemical transformations.
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