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प्रश्न
Answer in brief.
Give the equations of the reactions for the preparation of phenol from isopropyl benezene.
उत्तर
Isopropylbenzene: This is the commercial method of preparation of phenol. Isopropylbenzene (Cumene) on air oxidation in presence of Conaphthenate gives cumene hydroperoxide, which on decomposition with dilute acid gives phenol with acetone as a valuable by-product.
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संबंधित प्रश्न
Write IUPAC name of crotonyl alcohol.
With the help of chemical equations show what happens when cumene hydroperoxide is treated with dil. acid.
Write Kolbe’s reaction.
Write chemical equation of acetyl chloride with phenol
How will you bring about the following conversions?
isopropyl alcohol to acetone
What is the action of conc. H2SO4 on carbolic acid at 373 K.
\[\ce{C3H8O ->[KMnO4][(Oxidation)] C3H6O2}\]
The compound C3H8O is a/an ____________.
In the Lucas test for alcohols, the appearance of turbidity is due to the formation of ____________.
Which of the following compounds is obtained, when phenol react with bromine water?
Bromination of phenol, will NOT give:
____________ will NOT undergo acetylation.
Phenoxide ion is more stable than phenol due to the ____________.
(I)
(II) \[\ce{P + Zn ->[\Delta] Q}\]
(III) \[\ce{P ->[Na2Cr2O7][H2SO4] R}\]
Q and R are respectively:
Which of the following alcohols is least soluble in water?
Identify 'Z' in the following series of reaction:
\[\ce{Butan - 2 - ol ->[PCl3] X ->[alco. KOH] Y ->[i) H2SO4][ii) H-OH/heat] Z}\]
Identify the role of PDC from the following.
The compound which reacts fastest with Lucas reagent at room temperature is ______.
Which among the following phenolic compound is most acidic in nature?
Name the catalyst used in commercial method of preparation of phenol.
Which of the following compounds has lowest boiling point?
What is the product obtained in Reimer - Tiemann reaction?
The major product obtained in the following reaction is
What is the action of nitrous acid on aniline?
Explain the reaction of 1° and 2° alcohol with oxidising agent chromic anhydride (CrO3).
Write the chemical reaction when hot copper is treated with Vapours of 1° (primary) alcohol.
Write chemical reaction when hot copper is treated with Vapours of 3° (tertiary) alcohol.
Explain: Phenols are acid while alcohol is neutral.
