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Assignment 4: 1) For the following reactions provide the full radical mechanism for the reaction

Chemistry

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Assignment 4:

1) For the following reactions provide the full radical mechanism for the reaction. Also provide the overall reaction scheme for the reaction.

a)

      

 

b)

 

 

c)

 

 

d)

 

e) Remember! Resonance stabilization of radicals is always good (unlike for carbocations where it can be bad…)

 

f)

 

g)

 

2. For the following reactions determine a) the product; b) the mechanism (draw it and identify it); c) if the reaction is endothermic or exothermic (based on the relative stability of the products and starting materials); d) draw the reaction co-ordinate diagram; e) considering the Hammond postulate, draw the expected transition state clearly indicating its resemblance to the appropriate intermediate or stable species.

a) 

 

b)

 

c)

 

3. For the following alkyne reactions provide the product and mechanism. a)

 

 

b)

 

c)

 

 

d)

 

 

e)

 

 

f)

 

 

g)