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1. (10 pts)  Give the major product of this reaction, with the proper stereochemistry.






2. (10 pts)  Give the major product of this Pauson-Khand reaction.



(2 pts)  Give the correct name of Co2(CO)8.



3. (20 pts; 5 ea)  Give the structure for A-D, in the box provided.



(2 pts)  What is the NAME of the reaction that converts A to B?   ______________________________


(2 pts)  What is the NAME of the reaction that converts C to D?   ______________________________



4. (10 pts)  Give a complete mechanism for formation of the indene product shown.



(2 pts)  Draw the structure of the other product of this reaction, labeled as ?.   _____________________



5. (10 pts)  Label the major and minor product of this reaction, A or B.  Show the 
             conformation for the [3+2]-cycloaddition reaction leading to each product 
             and use this as part of your explanation for your choices of major and 
             minor.






6. (10 pts)  Indicate which of the two products shown is the major one, and show an 
             appropriate model used to predict which diastereomer is major.







7. (10 pts)  Coupling constants and nOe's for Hd when He is irradiated are shown for A 
             and B.  Label the structures as A or B in the appropriate box, consistent 
             with their stereochemistry.






8. (25 pts; 5 ea).  For the following synthetic sequence, put the appropriate 
                    structure A-E in the appropriate box.



(2 pts)  What are the reagents necessary for the Swern oxidation?  _________________________

If you have a question, please send it to

smith@nucleus.chem.uconn.edu


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