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प्रश्न
Write the structure of the product of the following reaction:
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उत्तर
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संबंधित प्रश्न
Write the chemical equations to illustrate the following name reactions : Rosenmund reduction
Write the reaction involved in the Stephen reduction
Esters react with DIBAL-H to produce:
The oxidation of toluene to benzoic acid can be stopped at the aldehyde stage to give benzaldehyde. The reagent used for the purpose is one of the following.
Can Gatterman-Koch reaction be considered similar to Friedel Craft’s acylation? Discuss.
Match the example given in Column I with the name of the reaction in Column II.
| Column I (Example) |
Column II (Reaction) |
||
| (i) | \[\begin{array}{cc} \phantom{...}\ce{O}\phantom{..............................}\ce{O}\phantom{}\\ \phantom{...}||\phantom{..............................}||\phantom{}\\ \ce{CH3 - C - Cl + H2 ->[Pd - C/BasO4] CH3 - C - H} \end{array}\] |
(a) | Friedel Crafts acylation |
| (ii) |  |
(b) | HVZ reaction |
| (iii) |  |
(c) | Aldol condensation |
| (iv) | \[\begin{array}{cc} \ce{R - CH2 - COOH ->[Br/Red P] R - CH - COOH}\\ \phantom{.....................}|\\ \phantom{.......................}\ce{Br} \end{array}\] |
(d) | Cannizaro’s reaction |
| (v) | \[\ce{CH3 - CN ->[(i) SnCl2/HCl][(ii) H2O/H+] CH3CHO}\] | (e) | Rosenmund’s reductio |
| (vi) | \[\ce{2CH3CHO ->[NaOH] CH3 - CH = CHCHO}\] | (f) | Stephen’s reaction |
What is the name of the given reaction of preparation of aldehyde?
\[\ce{C3COCl ->[H2][Pd/BaSO4] CH3CHO + HCl}\]
In the chromyl chloride test, the final step results in the formation of a yellow precipitate of the following:
The reaction
When 2 – hydroxyl benzoic acid distilled with zinc dust, it give
The general formula CnH2NO2 could be for open chain
The reagent in friedel - craft reaction is:
The intermediate compound ‘X’ in the following chemical reaction is:
Explain the following reactions:
Stephan reaction
The reaction of benzene with CO and HCl in the presence of anhydrous AlCl3 gives ______.
Assertion (A): Strong oxidising agents oxidise toluene and its derivatives to benzoic acids.
Reason (R): It is possible to stop the oxidation of toluene at the aldehyde stage with suitable reagents.
Select the most appropriate answer from the options given below:
Account for the following:
N-ethylbenzene sulphonyl amide is soluble in alkali.
Account for the following:
Reduction of nitrobenzene using Fe and HCl is preferred over Sn and HCl.
