Select the structure of the major product formed in the following reaction.

Question

Quizplus · Accepted Answer

The reaction involves a Grignard reaction with an ester. The Grignard reagent attacks the carbonyl carbon of the ester, forming a tetrahedral intermediate. The intermediate collapses to form a ketone, which is the major product. Since both R-groups on the ketone are the same (methyl), the product is symmetrical. The only symmetrical option among the choices is III.

Select the Structure of the Major Product Formed in the Following