Search any question & find its solution
Question:
Answered & Verified by Expert
Name the reagents used in the following reactions:
(i) Oxidation of a primary alcohol to carboxylic acid.
(ii) Oxidation of a primary alcohol to aldehyde.
(iii) Bromination of phenol to 2, 4, 6-tribromophenol
(iv) Benzyl alcohol to benzoic acid.
(v) Dehydration of propan-2-ol to propene.
(vi) Butan-2-one to butan-2-ol.
(i) Oxidation of a primary alcohol to carboxylic acid.
(ii) Oxidation of a primary alcohol to aldehyde.
(iii) Bromination of phenol to 2, 4, 6-tribromophenol
(iv) Benzyl alcohol to benzoic acid.
(v) Dehydration of propan-2-ol to propene.
(vi) Butan-2-one to butan-2-ol.
Solution:
2630 Upvotes
Verified Answer
(i) Acidified potassium dichromate or neutral/acidic/ alkaline potassium permanganate.
(ii) Pyridinium chlorochromate $(\mathrm{PCC}),\left(\mathrm{C}_5 \mathrm{H}_5 \mathrm{NH}\right)^{+} \mathrm{ClCrO}_3^{-}$in $\mathrm{CH}_2 \mathrm{Cl}_2$
or Pyridinium dichromate (PDC), $\left[\left(\mathrm{C}_5 \mathrm{H}_5 \mathrm{NH}\right)_2\right]^{2+} \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ in $\mathrm{CH}_2 \mathrm{Cl}_2$
(iii) Aqueous bromine, i.e., $\mathrm{Br}_2 / \mathrm{H}_2 \mathrm{O}$.
(iv) Acidified or alkaline potassium permanganate.
(v) $85 \% \mathrm{H}_2 \mathrm{SO}_4$ at $440 \mathrm{~K}$.
(vi) $\mathrm{Ni} / \mathrm{H}_2$ or $\mathrm{NaBH}_4$ or $\mathrm{LiAlH}_4$.
(ii) Pyridinium chlorochromate $(\mathrm{PCC}),\left(\mathrm{C}_5 \mathrm{H}_5 \mathrm{NH}\right)^{+} \mathrm{ClCrO}_3^{-}$in $\mathrm{CH}_2 \mathrm{Cl}_2$
or Pyridinium dichromate (PDC), $\left[\left(\mathrm{C}_5 \mathrm{H}_5 \mathrm{NH}\right)_2\right]^{2+} \mathrm{Cr}_2 \mathrm{O}_7^{2-}$ in $\mathrm{CH}_2 \mathrm{Cl}_2$
(iii) Aqueous bromine, i.e., $\mathrm{Br}_2 / \mathrm{H}_2 \mathrm{O}$.
(iv) Acidified or alkaline potassium permanganate.
(v) $85 \% \mathrm{H}_2 \mathrm{SO}_4$ at $440 \mathrm{~K}$.
(vi) $\mathrm{Ni} / \mathrm{H}_2$ or $\mathrm{NaBH}_4$ or $\mathrm{LiAlH}_4$.
Looking for more such questions to practice?
Download the MARKS App - The ultimate prep app for IIT JEE & NEET with chapter-wise PYQs, revision notes, formula sheets, custom tests & much more.