JEE PYQ: Carboxylic Acid And Its Derivatives Question 4
Question 4 - 2021 (25 Feb Shift 1)
Which one of the following reactions will not form acetaldehyde?
(1). ($\text{CH}_3\text{CH}_2\text{OH} \xrightarrow{\text{CrO}_3, \text{H}_3\text{O}^+}$)
(2). ($\text{CH}_3\text{CN} \xrightarrow{\text{(i) DIBAL-H, (ii) H}_2\text{O}}$)
(3). ($\text{CH}_2=\text{CH}_2 + \text{O}_2 \xrightarrow{\text{PdCl}_2/\text{CuCl}_2}$)
(4). ($\text{CH}_3\text{CH}_2\text{OH} \xrightarrow[\text{573K}]{\text{Cu}}$)
Show Answer
Answer: (1)
Solution
$\text{CrO}_3/\text{H}_3\text{O}^+$ (Jones reagent) oxidizes primary alcohols directly to carboxylic acids ($\text{CH}_3\text{COOH}$), not aldehydes.
BETA
