Question
Above conversion is carried out using
The correct answer is
(I) KOH (alc.), (II) Hydroboration-oxidation
The given reaction involves the conversion of a bromide to an alcohol. This can be achieved in two main steps as follows:
- The first step involves the elimination reaction using alcoholic KOH. This leads to the formation of an alkene by removing the bromine atom and a hydrogen atom from the carbon adjacent to it.
- The second step is the hydroboration-oxidation of the alkene. This reaction proceeds via the addition of borane \( (BH_3) \) followed by oxidation with hydrogen peroxide in the presence of a base.
Let's discuss each step in detail:
- KOH (alc.): The alcoholic solution of KOH favors elimination (E2 mechanism) over substitution, thus converting the bromo-compound into an alkene by removing HBr.
- Hydroboration-Oxidation: This two-step reaction adds water across the double bond in a syn-addition manner, yielding the alcohol. It proceeds through the formation of trialkylborane followed by oxidation to produce the alcohol.
Therefore, the correct answer is:
(I) KOH (alc.), (II) Hydroboration-oxidation
This choice efficiently converts the bromoalkane to the corresponding alcohol, matching the transformation depicted in the figure.
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Important Questions from Chemistry (CUET PG) Mixed
- Which of the following atmospheric gas does not dissolve in water at standard temperature and pressure conditions?
- Which of the following physical processes is responsible for the blue color of the sky?
- Arrange the following coal types in the increasing order of their heat content (KJ/kg)
(A). Peat
(B). Lignite
(C). Anthracite
(D). Bituminous
(E) Sub-bituminous
Choose the correct answer from the options given below: - In which of the following layers of atmosphere, does the temperature decrease with the increase in height from the earth's surafce?
(A). Troposphere
(B). Mesosphere
(C). Thermosphere
(D). Stratosphere
Choose the correct answer from the options given below: Choose the correct statement from the following:
(A). Water has highest density at 4°C
(B). Freezing point of water is 0°C
(C) An Ice cube does not completely dip in water, rather floats on water in a glass.
(D). Addition of common salt reduces freezing point of water.
Choose the correct answer from the options given below:
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