Question

The most suitable reagent for the conversion of $RC{H}_{2}OH\to RCHO$ is?

• A. $K_{2}C{r}_2{O}_7$
• B. $Cr{O}_3$
• C. $KMn{O}_4$
• D. PCC

Answer 1

The correct option is D PCC

$RC{H}_{2}OH\to RCHO$

its an oxidation reaction.

Pyridinium chlorochromate is amild oxidising agent that oxidises primary alcohol to aldehydes and secondary alcohols to ketones. It does not effect any other functional group and therefore have high selectivity for oxidation of alcohols. Whereas acidic permanganate, acidic dichromate, chromic anhydride in glacial acetic acid are strong oxidising agents and can do further oxidation to carboxylic acid.

The most suitable reagent for $RC{H}_{2}OH\to RCHO$ is pyridinium chlorochromate (PCC)