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प्रश्न
Name the electrophile produced in the reaction of benzene with benzoyl chloride in the presence of anhydrous \[\ce{AlCl3}\]. Name the reaction also.
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उत्तर
\[\begin{array}{cc}
\phantom{}\ce{O}\phantom{.......................}\ce{O}\phantom{...............................}\\
\phantom{}||\phantom{.......................}||\phantom{...............................}\\
\ce{C6HC - Cl + AlCl3 -> C6H5\overset{δ+}{C - Cl} = \overset{δ-}{Alcl3} -> C6H5Co+ + AlCl4}
\end{array}\]
Friedel–Crafts acylation reaction.
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संबंधित प्रश्न
Write the chemical equations to illustrate the following name reactions : Rosenmund reduction
Write the structure of the product of the following reaction:
Ozonolysis of alkenes followed by the reaction with zinc dust and water gives ____________ depending on the substitution pattern of the alkene.
Ethylbenzene is generally prepared by acetylation of benzene followed by reduction and not by direct alkylation. Think of a possible reason.
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 |
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:
Benz aldehyde + NaOH →
When 2 – hydroxyl benzoic acid distilled with zinc dust, it give
The general formula CnH2NO2 could be for open chain
Aldehydes are the first oxidation products of ______.
The oxidation of toluene to benzaldehyde by chromyl chloride is called ______.
Convert the following:
Benzoic acid to Benzaldehyde.
Explain the following reactions:
Stephan reaction
Reagent used to convert allyl alcohol to acrolein is ______.
An organic compound with molecular formula \[\ce{C7H7NO2}\] exists in three isomeric forms, the isomer ‘A’ has the highest melting point of the three. ‘A’ on reduction gives compound ‘B’ with molecular formula \[\ce{C7H9N}\]. ‘B’ on treatment with \[\ce{NaNO2/HCl}\] at 0-5° C to form compound ‘C’. On treating C with \[\ce{H3PO2}\], it gets converted to D with formula \[\ce{C7H8}\], which on further reaction with \[\ce{CrO2Cl2}\] followed by hydrolysis forms ‘E’ \[\ce{C7H6O}\]. Write the structure of compounds A to E. Write the chemical equations involved.
Account for the following:
Reduction of nitrobenzene using Fe and HCl is preferred over Sn and HCl.
Write the name of the reaction, structure and IUPAC name of the product formed when:
CH3CH2CN reacts with stannous chloride in the presence of hydrochloric acid, followed by hydrolysis.
