हिंदी
कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

Hoffmann Bromamide Degradation reaction is shown by ______. - Chemistry

Advertisements
Advertisements

प्रश्न

Hoffmann Bromamide Degradation reaction is shown by ______.

विकल्प

  • \[\ce{ArNH2}\]

  • \[\ce{ArCONH2}\]

  • \[\ce{ArNO2}\]

  • \[\ce{ArCH2NH2}\]

MCQ
रिक्त स्थान भरें
Advertisements

उत्तर

Hoffmann Bromamide Degradation reaction is shown by \[\ce{ArCONH2}\].

Explanation:

Hoffmann invented a method for producing primary amines by treating an amide with bromine in an aqueous or ethanolic sodium hydroxide solution. An alkyl or aryl group migrates from the amide's carbonyl carbon to the nitrogen atom during this degradation reaction.

\[\ce{C4H5CONH2 ->[Br2 + NaOH] C4H5NH2}\]

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 13: Amines - Multiple Choice Questions (Type - I) [पृष्ठ १८२]

APPEARS IN

एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 13 Amines
Multiple Choice Questions (Type - I) | Q 12 | पृष्ठ १८२

संबंधित प्रश्न

Write a short note on Hoffmann bromamide degradation.


How do you convert the following: C6H5CONH2 to C6H5NH2


Give the structure of A, B and C in the following reaction:

\[\ce{CH3CH2Br ->[KCN] A ->[LiAlH4] B ->[HNO2][0^\circ C] C}\]


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


Write reactions to prepare ethanamine from Acetonitrile.


Write reactions to bring about the following conversions.

Acetamide to Ethylamine


Why cannot aniline be prepared by Gabriel phthalimide synthesis?


The end product C of the following reaction is

\[\ce{C2H5NH2 ->[HNO2] A ->[PCl5] B ->[NH3][Alcohol] C}\]


For producing amines, the reaction of nitro compounds with iron scrap is preferred because:


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?


Identify A and B in the following reaction.


How will you carry out the following conversions?


A primary amine is formed by an amide on treatment with bromine and alkali. The primary amine has


The compound X is which of the following?

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


Reduction of nitro alkanes yields which compound?


Which of the following compound gives pink colour on reaction with phthalic anhydride in cone. H2SO4 followed by treatment with NaOH?


Which of the following reaction DOES NOT involve Hoffmann bromamide degradation?


Write a short note on the following:

Ammonolysis.


Write a short note on the following:

Ammonolysis


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×