MCQ
$\ce{CH_3CH_2OH}$ can be converted into $\ce{CH_3CHO}$ by $........$
- ACatalytic hydrogenation.
- BTreatment with $\ce{LiAlH_4}.$
- ✓Treatment with pyridinium chlorochromate.
- DTreatment with $\ce{KMnO_4}$
✓
Answer
Correct option: C.
Treatment with pyridinium chlorochromate.
Alcohols are oxidized to aldehydes and finally to acids.
$\text{CH}_3\text{CH}_2\text{OH}\xrightarrow{[\text{O}]}\text{CH}_3\text{CHO}\xrightarrow{[\text{O}]}\text{CH}_3\text{COOH}$
Oxidations can be stopped at aldehyde stage by using puridinium chlorochromate $(\ce{CrO_3C_5H_5N.HCl})$
$\text{CH}_3\text{CH}_2\text{OH}\xrightarrow{\text{PCC}}\text{CH}_3\text{CHO}$
$\text{CH}_3\text{CH}_2\text{OH}\xrightarrow{[\text{O}]}\text{CH}_3\text{CHO}\xrightarrow{[\text{O}]}\text{CH}_3\text{COOH}$
Oxidations can be stopped at aldehyde stage by using puridinium chlorochromate $(\ce{CrO_3C_5H_5N.HCl})$
$\text{CH}_3\text{CH}_2\text{OH}\xrightarrow{\text{PCC}}\text{CH}_3\text{CHO}$
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