Advertisements
Advertisements
प्रश्न
The best reagent for converting, 2-phenylpropanamide into 1- phenylethanamine is ______.
पर्याय
\[\ce{excess H2/Pt}\]
\[\ce{NaOH/Br2}\]
\[\ce{NaBH4 /methanol}\]
\[\ce{LiAlH4 /ether}\]
Advertisements
उत्तर
The best reagent for converting, 2-phenylpropanamide into 1- phenylethanamine is \[\ce{NaOH/Br2}\].
Explanation:
\[\begin{array}{cc}
\ce{CH3 - CH - CONH2 ->[Br/NaOH][(Hofmann's bromamide reaction)] CH3 - CH - NH2}\\
\phantom{}|\phantom{..............................................}|\phantom{..}\\
\phantom{....}\ce{\underset{2-Phenylpropanamide}{C6H5}\phantom{................................}\underset{1-Phenyletanamine}{C6H5}\phantom{...}}
\end{array}\]
APPEARS IN
संबंधित प्रश्न
How is ethyl amine prepared from methyl iodide?
Give the structure of A, B and C in the following reaction:
\[\ce{C6H5N2Cl ->[CuCN] A ->[H2O/H+] B ->[NH3][\Delta] C}\]
Give the structure of A, B and C in the following reaction:
\[\ce{C6H5NO2 ->[Fe/HCl] A ->[NaNO2 + HCl][273 K] B ->[H2O/H+][\Delta] C}\]
Why cannot aromatic primary amines be prepared by Gabriel phthalimide synthesis?
Write the reaction of aromatic primary amine with nitrous acid.
Choose the most correct option.
Which of the following compounds will dissolve in aqueous NaOH after undergoing reaction with Hinsberg reagent?
Answer the following
Identify A and B in the following reactions.
\[\ce{C6H5CH2Br->[alco.][KCN]A ->[Na/ethanol]B.}\]
Write reactions to bring about the following conversions.
Acetamide to Ethylamine
Which nitrogen containing compound amongst the following would undergo Mendius reduction to furnish primary amine \[\ce{(R - NH2)}\]?
Identify the INCORRECT statement regarding Hofmann bromamide reaction.
For producing amines, the reaction of nitro compounds with iron scrap is preferred because:
Which of the following compounds is the weakest Brönsted base?
The reagents that can be used to convert benzenediazonium chloride to benzene are:
(i) \[\ce{SnCl2/HCl}\]
(ii) \[\ce{CH3CH2OH}\]
(iii) \[\ce{H3PO2}\]
(iv) \[\ce{LiAlH4}\]
What is the best reagent to convert nitrile to primary amine?
How will you carry out the following conversions?
Assertion: Only a small amount of \[\ce{HCl}\] is required in the reduction of nitro compounds with iron scrap and \[\ce{HCl}\] in the presence of steam.
Reason: \[\ce{FeCl2}\] formed gets hydrolysed to release \[\ce{HCl}\] during the reaction.
Write short note on the following:
Ammonolysis
Write a short note on Ammonolysis.
Assertion: Amimonolysis of alkyl halides involves the reaction between alkyl halides and alcoholic ammonia.
Reason: Ammonolysis of alkyl halides produces secondary amines only.
