JEE Main20209 Jan 2020Evening ShiftChemistryAldehydes and KetonesActual

In the following reaction A is

Correct answer

Step-by-step solution

The above reaction sequence is given below. In the first step, halogenation reaction is occurred then elimination reaction gives cyclohexene and reductive ozonolysis gives the dialdehyde and then aldol condensation takes place and final desired product is formed.

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