Practicing Success

Target Exam

CUET

Subject

Chemistry

Chapter

Organic: Aldehydes, Ketones and Carboxylic Acids

Question:

Rosenmund reduction: Acid chlorides can be reduced to aldehydes when halogenated in the presence of a catalyst such as palladium deposited on barium sulphate. 

Which of the following can be used in place of quinoline, sulphur? 

Options:

Xylene

Crotonaldehyde

Dithiane 

Diethyl cadmium 

Correct Answer:

Xylene

Explanation:

Xylene can act as a catalytic poison and can easily replace quinoline and sulphur.