Compounds containing triple bonds are also Diels–Alder dienophiles.With this in mind, draw the products of attached reaction.

2) Draw the structure of the major/most stable product that results when the diene shown is treated with HBr at 60°C. (Hint: first, use scratch paper to show all possible intermediates and the corresponding products; then analyze the relative stability of those isomeric intermediates and products before drawing your conclusion)

] Draw the structure of Diels-Alder cycloadduct formed via an endo 3. [a, transition state structure involving the diene and dienophile shown here. [b Formulate the endo transition structure that leads to the product. [c is observed. Does it correspond to a primary or a secondary KIE? Explain. [d. the 'inverse' variety? Explain. -CO2ET ]A KIE ] Is the KIE of the 'normal' or

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