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प्रश्न
Which of the following are benzylic alcohols?
(i) \[\ce{C6H5 - CH2 - CH2OH}\]
(ii) \[\ce{C6H5 - CH2OH}\]
(iii) \[\begin{array}{cc}
\ce{C6H5 - CH - OH}\\
\phantom{}|\phantom{.}\\
\phantom{..}\ce{CH3}\phantom{}
\end{array}\]
(iv) \[\begin{array}{cc}
\ce{C6H5 - CH2 - CH - OH}\\
\phantom{.......}|\phantom{}\\
\phantom{.........}\ce{CH3}\phantom{}
\end{array}\]
उत्तर
(ii) \[\ce{C6H5 - CH2OH}\]
(iii) \[\begin{array}{cc}
\ce{C6H5 - CH - OH}\\
\phantom{}|\phantom{.}\\
\phantom{..}\ce{CH3}\phantom{}
\end{array}\]
Explanation:
In these alcohols, the –OH group is attached to a sp3- hybridised carbon atom next to an aromatic ring. For example,
Primary
Secondary
Tertiary
Allylic and benezlic alcohols may be primary, secondary or tertiary.
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संबंधित प्रश्न
Give simple chemical tests to distinguish between the following pairs of compounds: Benzoic acid and Phenol
Write the final product(s) in each of the following reactions:
Name the reagent used in the following reaction:
Bromination of phenol to 2, 4, 6-tribromophenol.
Write the reaction involved in the following:
Friedal-Crafts Alkylation of Phenol
When Phenol is distilled with zinc dust, it gives:
The electrophile involved in Reimer-Tiemann reaction of phenol with CHCl3 in presence of NaOH:
Which of the following are used to convert \[\ce{RCHO}\] into \[\ce{RCH2OH}\]?
(i) \[\ce{H2/Pd}\]
(ii) \[\ce{LiAlH4}\]
(iii) \[\ce{NaBH4}\]
(iv) Reaction with \[\ce{RMgX}\] followed by hydrolysis
Convert the following:
Phenol to N-phenylethanamide.
Which of the following reacts with phenol to give salicylaldehyde after hydrolysis?
Why ortho-nitrophenol is steam volatile while para-nitrophenol is not?
