Question

Practice Problem 16.42

Choose the correct product for the following Diels-Alder reaction.

HOOC CN

A.or B. or C.

A.or B.or C.

A.or B. or C.

Answer 1

In a Diels-Alder reaction a dienophile and a diene reacts to give a six mebered cyclic alkene. It is also known as [4+2] cyclo addition, as 6 pi electrons are involved in it. Generally endo product is formed as major product, (due to secondary orbital interaction), which is a thermodynamically controlled product. the Diene should have a s-cis conformation to give Diels Alder reaction.

ldih ieur CN (S home cm CN (412) l cjcbaliin CN