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Answer the following Identify A and B in the following reactions. CX6HX5CHX2Br→KCNalco⋅A→Na/ethanolB⋅

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प्रश्न

Answer the following

Identify A and B in the following reactions.

\[\ce{C6H5CH2Br->[alco.][KCN]A ->[Na/ethanol]B.}\]

एक पंक्ति में उत्तर
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उत्तर

\[\ce{\underset{\text{Benzyl bromide}}{C6H5 - CH2 - Br} ->[alcoholic KCN]\underset{\text{Phenylacetonitrile} (A)}{C6H5 - CH2 - C ≡ N} ->[Na/ethanol]\underset{\text{2-Phenylethylamine} (B)}{C6H5 - CH2 - CH2 - NH2}}\]

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अध्याय 13: Amines - Exercises [पृष्ठ २९७]

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बालभारती Chemistry [English] Standard 12 Maharashtra State Board
अध्याय 13 Amines
Exercises | Q 3.01 | पृष्ठ २९७

संबंधित प्रश्न

How are propan-1-amine and propan-2-amine prepared from oxime?


How do you convert the following: Ethanenitrile to ethanamine


Give the structures of A, B and C in the following reactions :


Accomplish the following conversion:

Benzamide to toluene


Give a plausible explanation for the following:

Why are amines less acidic than alcohols of comparable molecular masses?


Give the structures of A, B and C in the following reactions :


Account for the following:
Gabriel phthalimide synthesis is not preferred for preparing aromatic primary amines.


Answer in one sentence.

Which amide does produce ethanamine by Hofmann bromamide degradation reaction?


Answer in one sentence.

Predict the product of the following reaction.

\[\ce{Nitrobenzene ->[Sn/conc.HCl]?}\]


Write the order of reactivity of alkyl halides with ammonia.


Explain Hoffmann’s exhaustive alkylation with suitable reactions.


Why cannot aniline be prepared by Gabriel phthalimide synthesis?


Identify compound 'B' in following series of reactions?

\[\ce{Acetonitrile ->[Na/alcohol] A ->[NaNO2/dil.HCI] B}\]


Acetamide on reduction using Na/C2H5OH gives ____________.


Alkyl cyanides on reduction by sodium and ethanol give primary amines. This reaction is called as ____________.


Identify the product obtained, when benzamide is treated with bromine and aqueous sodium hydroxide.


Which of the following amines exhibits maximum degree of intermolecular hydrogen bonding?


Identify the major product (B).


Identify the product obtained when benzamide is treated with bromine and aqueous sodium hydroxide?


The reduction of alkyl cyanide with sodium and ethanol to give primary amines is, ____________.


Which of the following reagents is used in Hofmann's elimination reaction of amines?


Which of the following compounds is obtained when quaternary ammonium hydroxide is strongly heated?


Nitro compounds are reduced by iron scrap and hydrochloric acid to yield one of the following compounds:


Benzylamine may be alkylated as shown in the following equation:

\[\ce{C6H5CH2NH2 + R - X -> C6H5CH2NHR}\]

Which of the following alkylhalides is best suited for this reaction through SN1 mechanism?


The source of nitrogen in Gabriel synthesis of amines is ______.


Reduction of aromatic nitro compounds using \[\ce{Fe}\] and \[\ce{HCl}\] gives ______.


Among the following amines, the strongest Brönsted base is:


Reduction of nitrobenzene by which of the following reagent gives aniline?

(i) \[\ce{Sn/HCl}\]

(ii) \[\ce{Fe/HCl}\]

(iii) \[\ce{H2 - Pd}\]

(iv) \[\ce{Sn/NH4OH}\]


Which of the following amines can be prepared by Gabriel synthesis.

(i) Isobutyl amine

(ii) 2-Phenylethylamine

(iii) N-methylbenzylamine

(iv) Aniline


What is the best reagent to convert nitrile to primary amine?


Suggest a route by which the following conversion can be accomplished.


How will you carry out the following conversion?


How will you carry out the following conversions?


Assertion: Hoffmann’s bromamide reaction is given by primary amines.

Reason: Primary amines are more basic than secondary amines.


Assertion: Aromatic 1° amines can be prepared by Gabriel Phthalimide Synthesis.

Reason: Aryl halides undergo nucleophilic substitution with anion formed by phthalimide.


Describe Gabriel's phthalimide synthesis. (Give reaction)


The compound X is which of the following?

\[\ce{CH3CN ->[Na + C2H5OH] x}\]


Reduction of nitro alkanes yields which compound?


In the given reaction what is the X?

\[\begin{array}{cc}
\ce{O}\phantom{.......................}\\
||\phantom{.......................}\\
\phantom{}\ce{R - C - OH <-[H3O] Χ ->[H] RCH2NH2}
\end{array}\]


Which of the following compound is expected to be most basic?


C6H5CONHCH3 can be converted into C6H5CH2NHCH3 by:-


Which of the following amines can be prepared by Gabriel phthalimide reaction?


The amine 'A' when treated with nitrous acid gives yellow oily substance. The amine A is ______.


Which of the following statement(s) is/are incorrect in case of Hofmann bromamide degradation?


What is the IUPAC name of \[\ce{(CH3)2 - N - CH3}\]?


Identify the compo ds A and B in the following reactions:

\[\ce{A ->[Nitrating mixture] B ->[(i) Sn/cone. HCI][(ii) NaOH] Aniline}\]


Write a short note on the following:

Ammonolysis


Write short note on the following:

Ammonolysis


Write a short note on Ammonolysis.


Write a short note on the following:

Ammonolysis.


Write short notes on the following:

Ammonolysis 


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