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Unformatted text preview: Cl H 3 C A 1. B + B C C 26 H 23 P C 13 H 18 C 26 H 24 ClP Ph 3 P PhLi O + Ph 3 PO (a salt), check the notes if you have to-LiBr 5. 5. Aminals can sometimes serve as a protecting group analogous to acetals. Show short synthetic pathway how you would prepare an aminal starting from the following aldehyde: O H O NH 6. Show synthesis of the cyclic compound below: CHO N CN 7. Starting with ethylene show simple synthesis for the following compounds: O O a. O HO O O b. c. d. 8. Design reasonable mechanism for the two reactions below: OH O a. NAD + H 2 O + NADH b. O H CN H OH Me O Me Me Me OH CN HO-+ + 9. There are two pathways to convert cyclohexanone to the cyclohexylmethylcarboxylic acid. Show both: O COOH...
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- Spring '06
- Organic chemistry