Advertisements
Advertisements
प्रश्न
What is the action of Grignard reagent on benzonitrile?
उत्तर
Benzonitrile on reaction with the Grignard reagent in the dry ether as solvent followed by acid hydrolysis will form corresponding ketone derivative.
\[\begin{array}{cc}
\ce{\underset{\text{Benzonitrile}}{C6H5 - C ≡ N} + \underset{\text{Alkyl magnesium Ketone derivative halide (Grignard reagent)}}{RMgX} ->[dry ether] R - C = NMgX ->[H3O+] \underset{\text{Ketone derivative}}{RCO - C6H5} + NH3 + Mg(X)OH}\\
\phantom{........................}|\\
\phantom{............................}\ce{C6H5}
\end{array}\]
संबंधित प्रश्न
Answer the following in one sentence.
Write reaction showing conversion of benzonitrile into benzoic acid.
Answer the following in one sentence.
Name the product obtained by the oxidation of 1,2,3,4-tetrahydronaphthalene with acidified potassium permanganate.
Answer the following in one sentence.
Acetic acid is prepared from methyl magnesium bromide and dry ice in presence of dry ether. Name the compound which serves not only as reagent but also as a cooling agent in the reaction.
Answer in brief.
Write reaction showing the action of the following reagent on propanenitrile:
Dilute NaOH
What is the action of the following reagent on toluene?
Acetyl chloride in presence of anhydrous AlCl3.
Write reaction showing conversion of p-bromoisopropylbenzene into p-isopropylbenzoic acid (3 steps).
Write reagent for conversion of alkyl nitrile into aldehyde.
Choose the CORRECT increasing order of the acidic strength of carboxylic acids from the following.
In which one of the following conversions, phosphorus pentachloride is used as a reagent?
Identify X in the following reaction:
Identify the functional group in the product formed.
\[\begin{array}{cc}
\phantom{...........}\ce{O}\\
\phantom{...........}||\\
\ce{C2H5 - N - H + CH3 - C - Cl ->[Pyridine][-HCl]}\\
|\phantom{......................}\\
\ce{C2H5}\phantom{..................}
\end{array}\]
Hydrides of transition metals are used as powerful ____________ agents.
Which of the following compound gives a ketone with Grignard reagent?
Acetic anhydride is obtained from acetyl chloride by the reaction of ____________.
Soaps are the sodium or potassium salts of higher fatty acids, containing number of carbon atoms more than ______.
Identify the product C in following reaction.
\[\ce{CH3CH2COOH ->[NaOH] A ->[NaOH][CaO*\Delta] B ->[HNO3][\Delta] C}\]
Which of the following compounds yields 3-Ethylpentan-3-ol by using ethyl magnesium iodide followed by acid hydrolysis?
Propane nitrile on reaction with ethyl magnesium iodide in presence of dry ether gives complex. This imine complex on acid hydrolysis forms.
Write preparation of acetic acid from:
acetyl chloride
Write preparation of acetic acid from:
dry ice
Which of the following carboxylic acids is most reactive towards esterification?
Which of the following alkenes on oxidation by KMnO4 in dil H2SO4 forms adipic acid?
Identify product B in the following reaction.
\[\ce{Cumene ->[KMnO4, KOH][\Delta] A ->[H3O+] B}\]
Convert the following:
Cyclohexene into adipic acid.
