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The major product of the following chemical reaction is: CH3CH2CN (1) H3O+, Δ (2) SOCl2 (3) Pd/BaSO4, H2

1. CH3CH2CH2CH3
2. CH3CH2CH2OH
3. (CH3CH2CO)2O
4. CH3CH2CHO

Correct answer: CH3CH2CHO

Solution

The reaction conditions indicate that the compound undergoes reduction with palladium on barium sulfate in the presence of hydrogen, which typically leads to the formation of an aldehyde from a nitrile. Therefore, CH3CH2CHO is the expected product as it results from the partial reduction of the nitrile group.

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