JEE Main · 2022 · 25 Jul 2022 · Shift 1 · Aldehydes Ketones and Carboxylic Acids

The reaction shown is a Diels-Alder cycloaddition between a diene and a dienophile. The product A is a cyclohexene derivative.

In the Diels-Alder product, two new $s{p}^3$ carbon centers are formed at the junction points. When the dienophile has substituents (like the ester groups shown), these carbons become chiral centers if they bear four different groups.

Analyzing the product structure: the two newly formed $s{p}^3$ carbons at positions where the diene and dienophile connect each have four different substituents attached, making them chiral centers.

Number of chiral carbons = 2