Advertisements
Advertisements
प्रश्न
Show how is the following alcohol prepared by the reaction of a suitable Grignard reagent on methanal?
\[\begin{array}{cc}
\ce{CH3 - CH - CH2OH}\\
|\phantom{........}\\
\ce{CH3}\phantom{....}\\
\end{array}\]
Advertisements
उत्तर
\[\begin{array}{cc}
\phantom{...............}\ce{OMgBr}\\
\phantom{......}|\\
\ce{CH3 - CH - MgBr + HCHO -> CH3 - CH - CH2 ->[H2O] CH3 - CH - CH2OH + Mg(OH)Br}\\
|\phantom{....................................................}|\phantom{...................................}|\phantom{..............................}\\
\ce{CH3}\phantom{..............................................}\ce{CH3}\phantom{.............................}\ce{CH3}\phantom{...........................}\\
\end{array}\]
APPEARS IN
संबंधित प्रश्न
Write the main product(s) in each of the following reactions:
Show how is the following alcohol prepared by the reaction of a suitable Grignard reagent on methanal?
How is the following conversion carried out?
\[\ce{Ethyl magnesium chloride -> Propan-1-ol}\]
Name the reagents used in the following reactions:
Primary alcohols are prepared by the reduction of carboxylic acids. Though lithium aluminium hydride is a strong reducing agent, it is not used in the reaction. This is so because:
Acetone reacts with Grignard reagent to form:
Magnesium wire continues to burn in the atmosphere of CO2 because
Select the acid(s) which cannot be prepared by Grignard reagent.
A compound does not react with 2, 4 dinitrophenylhydrazine, the compound is:
The products "A" and "B" formed in above reactions are:
\[\ce{C3H8O ->[{[O]}][K2Cr2O7/H2SO4] C3H6O ->[I2 + NaOH(aq.)] CHI3}\]
In this reaction the first compound is:
The major product of the following reaction is:
\[\begin{array}{cc}
\ce{Cl}\phantom{.........................}\\
|\phantom{..........................}\\
\ce{CH3 - CH - CH3 ->[(i) Alc. KOH][(ii) HBr/peroxide (iii) aq. KOH]}
\end{array}\]
Given below are two statements:
Statement I: On heating with KHSO4, glycerol is dehydrated and acrolein is formed.
Statement II: Acrolein has a fruity odour and can be used to test glycerol's presence.
Choose the correct option.
Write the mechanism of acid dehydration of ethanol to yield ethene.
How are the following conversion carried out?
\[\ce{Methyl magnesium bromide -> 2-Methylpropan-2-ol}\]
