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प्रश्न
What is meant by hydroboration-oxidation reaction? Illustrate it with an example.
Illustrate the hydroboration-oxidation reaction with an example.
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उत्तर
The addition of borane followed by oxidation is known as the hydroboration-oxidation reaction. For example, propan-1-ol is produced by the hydroboration-oxidation reaction of propene. In this reaction, propene reacts with diborane (BH3)2 to form trialkyl borane as an addition product. This addition product is oxidized to alcohol by hydrogen peroxide in the presence of aqueous sodium hydroxide.
\[\ce{\underset{Propene}{CH3 - CH = CH2} + BH3 -> CH3 - CH2 - CH2 - BH2 ->[CH3CH = CH2](CH3 - CH2 - CH2)2BH ->[CH3CH = CH2] \underset{Addition reaction}{(CH3 - CH2 - CH2)3B} ->[H2O/H2O/\overset{-}{O}H]\underset{Propanol}{3CH3 - CH2 - CH2 - OH}}\]
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संबंधित प्रश्न
Name the reagents used in the following reactions:
Name the reagents used in the following reactions:
How do you convert the following : Propan-2-ol to 2-methylpropan-2-ol
Show how is the following alcohol prepared by the reaction of a suitable Grignard reagent on methanal?
\[\begin{array}{cc}
\ce{CH3 - CH - CH2OH}\\
|\phantom{......}\\
\ce{CH3}\phantom{...}
\end{array}\]
Predict the major product of acid catalysed dehydration of butan-1-ol.
How is the following conversion carried out?
\[\ce{Benzyl chloride -> Benzyl alcohol}\]
Name the reagent used in the following reaction:
Butan-2-one to butan-2-ol.
Show how you would synthesise the following alcohol from an appropriate alkene?
Show how you would synthesise the following alcohol from an appropriate alkene?
How will you convert: Phenol to 2, 4, 6 − trinitrophenol?
Write the structures of A, B and C in the following reactions :
Aldehydes react with Grignard reagent to produce ____________.
Benzaldehyde differs from acetaldehyde in that:
Alkenes convert into alcohols by ____________.
Glycerol is used in the manufacture
The products "A" and "B" formed in above reactions are:
How are the following conversions carried out?
\[\ce{Methyl magnesium bromide ->2-Methylpropan-2-ol}\]
How are the following conversion carried out?
\[\ce{Methyl magnesium bromide -> 2-Methylpropan-2-ol}\]
