5163

Predict the products, A and/or B, that would be formed if the following reaction were under kinetic or thermodynamic control. Propose a mechanism for the reaction and explain your answer.

5324

Draw the molecular orbital representation of 1,3-butadiene, and explain, using your molecular orbital figure and resonance structures, why the C=C bond of butadiene is found to be longer than might be expected, whereas the C-C bond is shorter.