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JEE Advanced 2006
Exam
JEE Advanced
Year
2006
Subject
Chemistry
Chapter
Amines

JEE Advanced 2006 · Chemistry · Amines

Paragraph: RCONH _ 2 is converted into RNH _ 2 by means of Hofmann...

Paragraph: \mathrm{RCONH}}_{2} \text{ is converted into } \mathrm{RNH}}_{2}  by means of Hofmann bromamide degradation. <imgsrc="/api/proxy−image?url=https\text{ by means of Hofmann bromamide degradation. }<img src="/api/proxy-image?url=https%3A%2F%2Ffirebasestorage.googleapis.com%2Fv0%2Fb%2Fquantrexacademy-app.firebasestorage.app%2Fo%2Fquestions%252Ffigs%252Fpyq%252Fjee_advanced%252FkUvdLVZCCRDn5vZcz3oaK6cUZX7TS8jt4MnQjqIiZ1U.original.fullsize.png%3Falt%3Dmedia&clean=1&v=wm2" data-qx-orig-src="https://firebasestorage.googleapis.com/v0/b/quantrexacademy-app.firebasestorage.app/o/questions%2Ffigs%2Fpyq%2Fjee_advanced%2FkUvdLVZCCRDn5vZcz3oaK6cUZX7TS8jt4MnQjqIiZ1U.original.fullsize.png?alt=media" data-qx-storage-src="https://firebasestorage.googleapis.com/v0/b/quantrexacademy-app.firebasestorage.app/o/questions%2Ffigs%2Fpyq%2Fjee_advanced%2FkUvdLVZCCRDn5vZcz3oaK6cUZX7TS8jt4MnQjqIiZ1U.original.fullsize.png?alt=media"> \\ In this reaction, RCONHBrR \mathrm{CONHBr} is formed from which this reaction has derived its name. Electron donating group at phenyl activates the reaction. Hofmann degradation reaction is an intramolecular reaction.Question: How can the conversion of (i) to (ii) be brought about?

Options

  1. AKBr\mathrm{KBr}
  2. BKBr+CH3ONa\mathrm{KBr}+\mathrm{CH}_3 \mathrm{ONa}
  3. CKBr+KOH\mathrm{KBr}+\mathrm{KOH}
  4. DBr2+KOH\mathrm{Br}_2+\mathrm{KOH}

Correct answer

D. Br2+KOH\mathrm{Br}_2+\mathrm{KOH}

Step-by-step solution

Paragraph: RCONH _ 2 is converted into RNH _ 2 by means of Hofmann bromamide degradation. In this reaction, R CONHBr is
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