Predict the major organic product of the reaction sequence,

Question

Quizplus · Accepted Answer

The reaction sequence involves a Grignard reaction followed by an acid-base reaction. The Grignard reagent (phenylmagnesium bromide) will attack the carbonyl carbon of the aldehyde in I to give II. II will then undergo an acid-base reaction where the acidic alpha-hydrogen is deprotonated by the strong base, resulting in the formation of the enolate III. The enolate III will then undergo an intramolecular aldol condensation to form the six-membered cyclic product IV.

Predict the Major Organic Product of the Reaction Sequence