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Exam 1 Practice Questions

Exam 1 Practice Questions - Chemistry 112B:Practice...

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Chemistry 112B:Practice Problems for Midterm 1, Thursday Feb 26, 2009 Question 1 (a) Propose reagents and reaction conditions for the following transformation, and a name for the functional group in the product. (5 points) H O N S O O Ph H N N S O O Ph NH 2 New functional group: (b) Propose reagents for the following transformation and a name for this type of reaction. (5 points) H N N S O O Ph NH 2 CH 3 N S O O Ph Name
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(c) Propose reagents for the following transformation and a name for this type of reaction. (5 points) H O N S O O Ph N S O O Ph Name H H H
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Question 2 (a) Predict 2 possible products of the following reaction (6 points). OMe COCl AlCl 3 , CH 2 Cl 2 (b) Provide a name for this type of reaction: —————————————————— (c) Provide a mechanism for the formation of one of the products from Part (a).
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Question 3 (a) Provide a synthesis of A from B . (Hint: the sequence involves a diazotization reaction) (25 points) NH 2 A Multiple Steps CN B Br Br Br
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(b) The amino group is normally an ortho/para director.
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