Question

Which reagent is best-suited accomplished the given reaction?

• A.
  $LiAl{H}_4$
• B.
  $PCC$
• C. $K_{2}C{r}_2{O}_7/H_{2}S{O}_4$
• D.
  $KMn{O}_4$

Answer 1

The correct option is B

$PCC$
PCC is an oxidizing agent that reacts with primary and secondary alcohols. However, it is less reactive than
potassium permanganate and chromic acid.
PCC differs from chromic acid by oxidizing primary alcohols to aldehydes, whereas chromic acid oxidizes primary alcohols and aldehydes to carboxylic acids. The desired product of the reaction given requires that the primary alcohol be oxdized to an aldehyde, so PCC is the best option. $LiAl{H}_4$ is a reducing agent and would have the opposite effect than what is desired.