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Rearrangement of an oxime to an amide in the presence of strong acid is called
- a)Curtius rearrangement
- b)Fries rearrangement
- c)Sandmeyer reaction
- d)Beckman rearrangement
Correct answer is option 'D'. Can you explain this answer?
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Rearrangement of an oxime to an amide in the presence of strong acid i...
Beckman Rearrangement:
The rearrangement of an oxime to an amide in the presence of strong acid is known as the Beckman rearrangement. This reaction is named after the German chemist Ernst Otto Beckmann who first described it in 1886.
Mechanism:
- The oxime is protonated by the strong acid, resulting in the formation of a protonated oxime.
- The protonated oxime undergoes rearrangement to form an isocyanate intermediate.
- The isocyanate intermediate then reacts with water to give the desired amide product.
Applications:
- The Beckman rearrangement is commonly used in organic synthesis to convert oximes to amides.
- It is a useful tool in the pharmaceutical industry for the preparation of various amide-containing compounds.
Comparison with other rearrangements:
- Curtius rearrangement involves the conversion of acyl azides to isocyanates.
- Fries rearrangement is the rearrangement of phenolic esters to ortho and para hydroxy ketones.
- Sandmeyer reaction involves the conversion of aromatic diazonium salts to various functional groups.
In conclusion, the Beckman rearrangement is a valuable synthetic tool for the conversion of oximes to amides in the presence of strong acid.
The rearrangement of an oxime to an amide in the presence of strong acid is known as the Beckman rearrangement. This reaction is named after the German chemist Ernst Otto Beckmann who first described it in 1886.
Mechanism:
- The oxime is protonated by the strong acid, resulting in the formation of a protonated oxime.
- The protonated oxime undergoes rearrangement to form an isocyanate intermediate.
- The isocyanate intermediate then reacts with water to give the desired amide product.
Applications:
- The Beckman rearrangement is commonly used in organic synthesis to convert oximes to amides.
- It is a useful tool in the pharmaceutical industry for the preparation of various amide-containing compounds.
Comparison with other rearrangements:
- Curtius rearrangement involves the conversion of acyl azides to isocyanates.
- Fries rearrangement is the rearrangement of phenolic esters to ortho and para hydroxy ketones.
- Sandmeyer reaction involves the conversion of aromatic diazonium salts to various functional groups.
In conclusion, the Beckman rearrangement is a valuable synthetic tool for the conversion of oximes to amides in the presence of strong acid.
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Rearrangement of an oxime to an amide in the presence of strong acid is calleda)Curtius rearrangementb)Fries rearrangementc)Sandmeyer reactiond)Beckman rearrangementCorrect answer is option 'D'. Can you explain this answer?
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Rearrangement of an oxime to an amide in the presence of strong acid is calleda)Curtius rearrangementb)Fries rearrangementc)Sandmeyer reactiond)Beckman rearrangementCorrect answer is option 'D'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Rearrangement of an oxime to an amide in the presence of strong acid is calleda)Curtius rearrangementb)Fries rearrangementc)Sandmeyer reactiond)Beckman rearrangementCorrect answer is option 'D'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Rearrangement of an oxime to an amide in the presence of strong acid is calleda)Curtius rearrangementb)Fries rearrangementc)Sandmeyer reactiond)Beckman rearrangementCorrect answer is option 'D'. Can you explain this answer?.
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