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Choose a possible segment of isotactic polyacrylonitrile.

What results from the reaction shown?

Identify the monomer(s) used to make the following polymer.

Which of the following compounds would produce D-glucose and D-mannose when subjected to Kiliani-Fischer synthesis?

Bonus question Provide an efficient stepwise synthesis for the following.            The answer should be entered as in the following example: (this is an example!) 1. NaNH2   2. CH3CH2Br   3. H2, Lindlar’s Cat.    4. BH3, THF   5. H2O2, NaOH                          (Keep three spaces between each step) All chemicals and reagents  structures should be correct and with the proper sequence. No partial credit.

Consider the following structures. Answer the following questions by placing the appropriate number or indicated letter in the blank. Structure ____ represents a ketohexose.

Which one of the following is the correct stereochemical configuration for D-xylose?  

Bonus question Provide the name of the product that results from the following reaction.  

Which of the following monomer(s) is (are) required to make the polymer below?

Which of the following is the open-chain form of the pyranose structure shown below?