The total number of sp2 hybridised carbon atoms in the major product P (a non-heterocyclic compound) of the following reaction is ____.
(see reaction scheme)
Answer: 28
Solution
The reaction scheme shows a multi-step organic transformation. Following the mechanism:
The starting material undergoes reactions that lead to product P, which is a non-heterocyclic compound containing multiple aromatic rings and conjugated systems.
Counting all sp2 hybridized carbons in P:
Aromatic ring carbons
Carbonyl carbons
Alkene carbons
Other conjugated carbons
Total count = 28sp2 hybridized carbon atoms.
JEE Advanced · 2023 · 04 Jun 2023 · Paper 1 · Integer answer