Ch 18 & 19

Ch 18 & 19 - Chem 112B Spring 2009 Practice...

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Chem 112B Spring 2009 Practice Problems (02/18/2009) Problem 1 Provide appropriate diene and dienophile for the formation of the following Diels Alder reaction products. Practice transition states. Me Me CO 2 Me CO 2 Me Me H Me O O N Me Me O O Ph H H Problem 2 Propose a mechanism for the following transformation. O OMe OMe S S S SH HS HCl Problem 3 Propose a synthesis of B from A O Br O OH A B (a) A B (b) Et Cl A B (c) Br NO 2 NH 2 NH 2
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Problem 4 The following aromatic substitution reaction (
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Ch 18 & 19 - Chem 112B Spring 2009 Practice...

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