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प्रश्न
Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is ______.
पर्याय
Hoffmann Bromamide reaction
Gabriel phthalimide synthesis
Sandmeyer reaction
Reaction with \[\ce{NH3}\]
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उत्तर
Best method for preparing primary amines from alkyl halides without changing the number of carbon atoms in the chain is Gabriel phthalimide synthesis.
Explanation:
Gabriel phthalimide synthesis is used to get primary amine from alkyl halide without any change in number of carbon atoms.

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संबंधित प्रश्न
Identify the compounds 'A' and 'B' in the following equation:

How do you convert the following: C6H5CONH2 to C6H5NH2
Give the structure of A, B and C in the following reaction:
\[\ce{CH3CH2I ->[NaCN] A ->[OH-][Partial hydrolysis] B ->[NaOH + Br2] C}\]
Mention 'two' uses of propan-2-one.
Choose the most correct option.
Which of the following compounds will dissolve in aqueous NaOH after undergoing reaction with Hinsberg reagent?
Alkyl cyanides on reduction by sodium and ethanol give primary amines. This reaction is called as ____________.
____________ can be prepared exclusively by Gabriel phthalimide synthesis.
Which of the following reagents is used in Hofmann's elimination reaction of amines?
Which of the following reactions does NOT yield an amine?
Nitro compounds are reduced by iron scrap and hydrochloric acid to yield one of the following compounds:
Amongst the following, the strongest base in aqueous medium is ______.
Which of the following amines can be prepared by Gabriel synthesis.
(i) Isobutyl amine
(ii) 2-Phenylethylamine
(iii) N-methylbenzylamine
(iv) Aniline
Write following conversions:
nitrobenzene `->` acetanilide
How will you carry out the following conversion?

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.
The Gabriels' phthalimide synthesis is used in the synthesis of
Methyl amine on reaction with chloroform in the presence of NaOH gives ______.
Identify the product ‘C’ in the following reaction.
\[\ce{Aniline ->[(CH3CH)2O][Pyridine] A ->[Br2][CH3COOH] B ->[H^+ or OH^-] C}\]
Write a short note on the following:
Ammonolysis.
