In a reaction,
reagents ' X ' and ' Y ' respectively are :
In a reaction,
reagents ' X ' and ' Y ' respectively are :
Show Hint
Recognize the functional groups involved and the type of reaction taking place. Fischer esterification is a common method for preparing esters from carboxylic acids or phenolic OH groups.
\(CH _3 OH / H ^{+}, \Delta and CH _3 OH / H ^{+}, \Delta\)
\(\left( CH _3 CO \right)_2 O / H ^{+}and CH _3 OH / H ^{+}, \Delta\)
\(\left( CH _3 CO \right)_2 O / H ^{+} and \left( CH _3 CO \right)_2 O / H ^{+}\)
\(CH _3 OH / H ^{+}, \Delta and \left( CH _3 CO \right)_2 O / H ^{+}\)
The Correct Option is B
Solution and Explanation
Step 1: Analyze the Reaction from B to C (Reagent ‘X’)
The transformation from B to C involves the esterification of the phenolic \(-\text{OH}\) group.
This can be achieved using acetic anhydride (\((\text{CH}_3\text{CO})_2\text{O}\)) in the presence of an acid catalyst (\(\text{H}^+\)). This reaction is known as Fischer esterification.
Step 2: Analyze the Reaction from B to A (Reagent ‘Y’)
The transformation from B to A involves the esterification of the carboxylic acid group (\(-\text{COOH}\)) with methanol (\(\text{CH}_3\text{OH}\)) in the presence of an acid catalyst (\(\text{H}^+\)) and heat (\(\Delta\)). This is also a Fischer esterification.
Conclusion
The reagents X and Y are \((\text{CH}_3\text{CO})_2\text{O}/\text{H}^+\) and \(\text{CH}_3\text{OH}/\text{H}^+, \Delta\),.
Top JEE Main Chemistry Questions
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- At equilibrium the concentrations of and in a sealed vessel at . What will be for the reaction
- Find out the major products from the following reactions
Cobalt chloride when dissolved in water forms pink colored complex $X$ which has octahedral geometry. This solution on treating with cone $HCl$ forms deep blue complex, $\underline{Y}$ which has a $\underline{Z}$ geometry $X, Y$ and $Z$, respectively, are
- The correct order of atomic radii is:
Top JEE Main Chemical Reactions of Aldehydes Ketones and Carboxylic Acids Questions
- The major product formed in the following reaction is-
- In the following reactions, find the product A and B
Arrange the following in decreasing acidicstrength
- $CH_3 - CH_2 - CN \xrightarrow[\text{Ether}]{CH_3MgBr} A \xrightarrow{H_3O^+} B \xrightarrow[HCl]{Zn - Hg} C$ The correct structure of $C$ is
- Number of isomeric compounds with molecular formula \(C _9 H _{10} O\) which
(i) do not dissolve in \(NaOH\)
(ii) do not dissolve in \(HCl\)
(iii) do not give orange precipitate with 2,4-DNP
(iv) on hydrogenation give identical compound with molecular formula \(C _9 H _{12} O\) is _________
Top JEE Main Questions
- In a hydrogen like atom, when an electron jumps from the $M$ - shell to the $L$ - shell, the wavelength of emitted radiation is $\lambda$. If an electron jumps from $N$-shell to the $L$-shell, the wavelength of emitted radiation will be :
- Two masses $m$ and $\frac{m}{2}$ are connected at the two ends of a massless rigid rod of length $l$. The rod is suspended by a thin wire of torsional constant $k$ at the centre of mass of the rod-mass system(see figure). Because of torsional constant $k$, the restoring torque is $\tau =k\theta$ for angular displacement $\theta$. If the rod is rota ted by $\theta_0$ and released, the tension in it when it passes through its mean position will be:
What will be the equilibrium constant of the given reaction carried out in a \(5 \,L\) vessel and having equilibrium amounts of \(A_2\) and \(A\) as \(0.5\) mole and \(2 \times 10^{-6}\) mole respectively?
The reaction : \(A_2 \rightleftharpoons 2A\)- The value of is
- The number of terms of an is even. The sum of the odd terms is and of the even terms is . The last term exceeds the first by . Then the number of terms in the series is ______.
Concepts Used:
Aldehydes, Ketones and Carboxylic Acids - Chemical Reactions
Chemical Reactions of Aldehydes and Ketones:
- Cross aldol condensation
Read Also: Aldehydes, Ketones, and Carboxylic Acids
Read More: Chemistry Named Reactions