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JEE Advanced2008ChemistryAldehydes and KetonesActual

Paragraph: In the following reaction sequence, product I . J and L are formed. K represent a reagent Question: The structure of product L is

Correct answer

1

Step-by-step solution

H ₂, Pd / BaSO ₄ , quinoline is well known reagent. Rosenmund's reaction (conversion of acyl halide to aldehyde) H ₂, Pd , BaSO ₄ is known as Lindlar's reagent and reduces triple bond to double bond (syn addition) giving cis product. Reagent has simultaneous action because usually reaction is not selective-follows radical mechanism.

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