The reaction of cyclohexadiene with acrolein is shown below. Use Frontier Molecular Orbital Theory (showing relevant orbital interactions) to explain why this reaction favours the endo product 18. Explain, using energy levels, why the reaction of cyclohexadiene proceedsrapidly with acrolein than with ethene.more Explain, using energy levels, why the reaction below, between an electron-deficient diene and an electron-rich alkene, occurs readily. Draw the structure, including stereochemistry, of the product 19 of the reaction below. Draw a 'curly' arrow mechanism and draw the transition state leading to

Fig: 1

Fig: 2

Fig: 3

Fig: 4

Fig: 5

Fig: 6

Fig: 7