Question

What is the major product when the methoxy substituent in the preceding reaction is bonded to C-2 of thediene rather than to C-1?

Short answer

The major product changing the methoxy group from C-1 to C-2 of diene is

Step-by-step solution

Definition of Diels-Alder reaction

Diels Alder reaction is a pericyclic reaction where a diene and dienophile reacts to form a cyclic entity. This reaction is a reversible reaction. At high temperature, the cyclic compound breaks to get back the reactants,

Reaction with different methoxy connectivity

Methoxy is an electron donating group. The partial charge distribution around diene will change if position of methoxy is changed from C-1 to C-2.