Advertisements
Advertisements
प्रश्न
Convert the following:
Benzoic acid to Benzaldehyde.
Write a chemical equation to convert the following:
Benzoic acid to benzaldehyde.
Advertisements
उत्तर
Firstly, benzoic acid is converted into benzoyl chloride by adding sulphonyl chloride, and then by Rosenmund reaction using Pd-BaSO4 converted into benzaldehyde.

Notes
Students should refer to the answer according to their questions.
APPEARS IN
संबंधित प्रश्न
Write the product in the following reaction:

Write the chemical equations to illustrate the following name reactions : Rosenmund reduction
Write the reaction involved in the Stephen reduction
Match the acids given in Column I with their correct IUPAC names given in Column II.
| Column I (Acids) |
Column II (IUPAC names) |
||
| (i) | Phthalic acid | (a) | Hexane-1,6-dioic acid |
| (ii) | Oxalic acid | (b) | Benzene-1,2-dicarboxylic acid |
| (iii) | Succinic acid | (c) | Pentane-1,5-dioic acid |
| (iv) | Adipic acid | (d) | Butane-1,4-dioic acid |
| (v) | Glutaric acid | (e) | Ethane-1,2-dioic acid |
An aromatic compound ‘A’ (Molecular formula \[\ce{C8H8O}\]) gives positive 2, 4-DNP test. It gives a yellow precipitate of compound ‘B’ on treatment with iodine and sodium hydroxide solution. Compound ‘A’ does not give Tollen’s or Fehling’s test. On drastic oxidation with potassium permanganate it forms a carboxylic acid ‘C’ (Molecular formula \[\ce{C7H6O2}\]), which is also formed along with the yellow compound in the above reaction. Identify A, B and C and write all the reactions involved.
\[\begin{array}{cc}
\ce{CH3 - CH2 - CH - CH3}\\
\phantom{.....}|\\
\phantom{......}\ce{Cl}
\end{array}\] obtained by chlorination of n-butane, will be
The number of chiral carbon in glucose is:-
The general formula CnH2NO2 could be for open chain
The intermediate compound ‘X’ in the following chemical reaction is:

Account for the following:
Reduction of nitrobenzene using Fe and HCl is preferred over Sn and HCl.
