Question

What is D in the following sequence of reactions?

• A. A
• B. B
• C. C
• D. D

Hint:

PCC (Pyridinium chlorochromate) is used to oxidize primary alcohols to aldehydes without further oxidation to carboxylic acids.

Answer 1

The Correct Option is A

Step 1: Analyze the reaction sequence.
The reaction sequence involves reduction of aldehyde to alcohol with sodium borohydride, followed by oxidation with PCC to form the aldehyde.
Step 2: Conclusion.
Thus, the compound D is CHO.
Final Answer: \[ \boxed{\text{CHO}} \]