Chem112BPractice1

Chem112BPractice1 - using a Diels Alder reaction Practice...

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Chem 112B Spring 2007 Practice Problems (03/08/07) Problem 1 Propose mechanisms for the following transformations O OMe OMe SH HS HCl S S S S A. B. O O O OH KOH H 2 O O CO 2 H Problem 2 Fill in the boxes with the appropriate product or reagents O N O CO 2 Et 1. NaOEt (2 equiv) 2. H + Decarboxylation conditions N HO O A. B. O Cl O Cl O O CO 2 Me CO 2 Me CO 2 Me O CO 2 Me H 2 Pd/C (Alkene Reduction)
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Problem 3 Provide reagents and synthesis steps for O OH O CO 2 Me O A. B. Problem 5 Provide an arrow pushing mechanism O O O O KOH H 2 O Question 6 Provide appropriate diene and dienophile for the formation of the following products
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Unformatted text preview: using a Diels Alder reaction. Practice transitions states CO 2 Me CO 2 Me N O O Ph Me Me H H H O O Question 7 How would you make C from A and B ? Use A and B as starting materials and any other reagents you like. This involves multiple steps including a Robinson annulation and a double 1,2-addition followed by elimination in the last step. O MgBr A B C OEt O...
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This note was uploaded on 02/22/2010 for the course CHEM N/A taught by Professor Head-gordon during the Spring '09 term at Berkeley.

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Chem112BPractice1 - using a Diels Alder reaction Practice...

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