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प्रश्न
The reagents used to convert phenol to 2,4,6-tribromophenol is _____________
विकल्प
Br2/CS2
Br2/CCl4
Br2/H2O
KBr aq.
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उत्तर
The reagents used to convert phenol to 2,4,6-tribromophenol is Br2/H2O
संबंधित प्रश्न
Answer in brief.
Give the reagents and conditions necessary to prepare phenol from Benzene sulfonic acid.
Oxidation of ethyl alcohol using K2Cr2O7/dil H2SO4 leads to formation of _______________
What is the action of following on phenol at low temperature?
- dil. HNO3
- conc. H2SO4
- Br2/CS2
An unknown alcohol is treated with Lucas reagent. Explain how you will determine whether the alcohol is primary, secondary or tertiary. Indicate by chemical equation the reaction between isopropyl alcohol and Lucas reagent.
How will you bring about the following conversions?
2-methyl propan-2-ol to 2-methylpropene
Which alcohol is difficult to oxidise?
____________ is used for silvering mirrors.
Which of following elements does not react with hot concentrated sulphuric acid?
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\[\ce{CH3 - CH2 - CH2 - OH ->[conc. H2SO4][\Delta]}\]
Identify 'A' and 'B' in the following series of reactions.
Identify reagents X, Y and Z.
What is INCORRECT about the product written in the below given reaction?
\[\ce{R - CH2 - OH ->[PCC] R - COOH}\]
(I)
(II) \[\ce{P + Zn ->[\Delta] Q}\]
(III) \[\ce{P ->[Na2Cr2O7][H2SO4] R}\]
Q and R are respectively:
Identify the product B in following conversion.
\[\ce{Chlorobenzene + H2O ->[Cu, 673 K][Pressure] A ->[conc. H2SO4][373 K] B}\]
Which following reagent is used to obtain alkene from alcohol?
Which of the following compounds does NOT react with sodium metal?
Identify product B in the following conversion?
\[\ce{Phenol ->[NaOH] A ->[CH3I] B}\]
Identify the alcohol that reacts immediately with Lucas reagent?
Which of the following alcohols is NOT prepared by reduction of carbonyl compounds?
Identify the product obtained when phenol is treated with bromine water?
Identify the role of PDC from the following.
Identify the product X in the following reaction.
\[\ce{Phenol ->[Na2Cr2O7][H2SO4] X}\]
The compound which reacts fastest with Lucas reagent at room temperature is ______.
Which among the following is not the method of preparation of phenol?
Write chemical reaction when hot copper is treated with Vapours of 3° (tertiary) alcohol.
Propene can be converted into propan-1-ol by:
Which of the following is primary benzylic alcohol?
