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Q4A-2005 - N Li Bonus(5 points Predict the two major...

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Chem 41c Quiz 4 Stoltz, Spring 2005 May 8, 2005 Predict the products (if any) of the following reactions: (5 points each) 1. OCH 3 O O 1. NaOEt, EtOH 2. NaOH, H 2 O 3, H 3 O + , Δ Br O 2. O O D D D D D 2 O, Et 3 N 3. O 1. LDA, THF, -78 °C 2. 3. mild H 3 O + work-up O H O OH draw all four possible stereoisomers O OH O OH O OH 4. O N O O 1. LDA, THF, -78 °C 2. Br O N O O 5 point bonus: what is the structure of LDA?
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Unformatted text preview: N Li Bonus (5 points) Predict the two major stereoisomeric products in problem 3 based on the discussions we had in class of closed transition states. What is the ration of these products formed in the reaction? O OH O OH 1:1...
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