10. These are synthesis questions. You need to show how the starting material can be converted into the product(s) shown. You may use any reactions we have learned provided that the product(s) you draw for each step is/are the predominant one(s). Show all the reagents you need. Show each molecule synthesized along the way and be sure to pay attention to the regiochemistry and stereochemistry preferences for each reaction. You must draw all stereoisomers formed, and use wedges and dashes to indicate chirality at each chiral center. Write racemic when appropriate. A) (8 pts) ? Br (only stereoisomer produced) Br B) (8 pts) ?
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We can use N-bromosuccinimide (NBS) as the brominating agent. The reaction will occur at the allylic position, resulting in the formation of a bromine atom at the allylic carbon. Show more…
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Adi S.
The above synthesis was designed using the Organic Chemistry Roadmaps in the appendix of your textbook. In this synthesis, reagents from the table (shown in blue) are used to carry out the indicated reactions. In the box below, draw the structure of product 1. Use the wedge/hash bond tools to indicate stereochemistry where it exists. Consider E/Z stereochemistry of alkenes. If more than one structure fits the description, draw them all. If the reaction produces a racemic mixture, draw both stereoisomers. Draw one structure per sketcher. Add additional sketchers using the drop-down menu in the bottom right corner. Separate structures with + signs from the drop-down menu.
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