Question:
Write short notes on the following: Reimer-Tiemann's reaction
Write short notes on the following: Reimer-Tiemann's reaction
Show Hint
Reimer-Tiemann reaction is an electrophilic substitution reaction introducing an aldehyde (-CHO) group into phenol.
Updated On: Mar 6, 2025
Hide Solution
Verified By Collegedunia
Solution and Explanation
Step 1: Reimer-Tiemann reaction is used to introduce a formyl (-CHO) group into phenol.
Step 2: Reaction: \[ C_6H_5OH + CHCl_3 + NaOH \rightarrow o-\text{hydroxybenzaldehyde} + p-\text{hydroxybenzaldehyde} \]
Step 3: The reaction mechanism involves the formation of a dichlorocarbene intermediate, which undergoes electrophilic substitution at the ortho- and para-positions of phenol.
Was this answer helpful?
0
0
Top Questions on Acids, Bases And Salts
- The acid present in nettle leaves is:
- CBSE Compartment X - 2025
- Science
- Acids, Bases And Salts
- A few drops of turmeric solution are added to a colorless liquid. If the liquid turns red in color, the liquid could be:
- CBSE Compartment X - 2025
- Science
- Acids, Bases And Salts
- A certain aqueous solution turns blue litmus red. On adding an excess of which of the following solutions will this change be reversed?
Lemon juice
Magnesium hydroxide
Vinegar
Calcium sulphate- CBSE Compartment X - 2025
- Science
- Acids, Bases And Salts
- Define crystalline water.
- CBSE Compartment X - 2025
- Science
- Acids, Bases And Salts
- Name the acids present in:
Tomato
Tamarind (imli)- CBSE Compartment X - 2025
- Science
- Acids, Bases And Salts
View More Questions
Questions Asked in UP Board XII exam
- If \( y = Ae^x + B \) where \( A, B \) are constants, then show that \( \frac{d^2y}{dx^2} - \frac{dy}{dx} = 0 \).
- UP Board XII - 2024
- Probability and Statistics
- (d) If vectors \( \mathbf{5i - \lambda j + 2k} \) and \( \mathbf{2i + 3j + 4k} \) are perpendicular, find \( \lambda \):
- UP Board XII - 2024
- Unit Vectors
Find the values of \( x, y, z \) if the matrix \( A \) satisfies the equation \( A^T A = I \), where
\[ A = \begin{bmatrix} 0 & 2y & z \\ x & y & -z \\ x & -y & z \end{bmatrix} \]
- UP Board XII - 2024
- Matrices
- If drift velocity of electron be \( v_d \) and intensity of electric field \( E \), then which relation among the following obeys Ohm's law?
- UP Board XII - 2024
- Electrical Circuits
- (c) The value of the integral \( \int \sqrt{1 + \sin 2x} \,dx \) is:
- UP Board XII - 2024
- Integration
View More Questions