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Statement-1 : Electrons releasing group ...

Statement-1 : Electrons releasing group at para position of a migrating aryl group enhances. The rate of reaction in Hofmann's preparation of primary amine from amides.
Statement-2:

A

Statement-1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement-1

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False.

D

Statement-1 is False, Statement-2 is True.

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The correct Answer is:
A
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Hofmann rearrangement In the Hofmann rearrangement an unsubstitued amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide. Gneral reaction: If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increase reactivity of Hofmann rearangement. Arrange the following amides according to their relative reactivity when reacted with Br_(2) in excess of strong base:

Hofmann rearrangement In the Hofmann rearrangement an unsubstitued amide is treated with sodium hydroxide and bromine to give a primary amine that has one carbon lesser than starting amide. Gneral reaction: If the migrating group is chiral then its configuration is retained. Electron releasing effects in the migrating group increase reactivity of Hofmann rearangement. Which of the following compound(s) cannot give Hoffman rearrangement:

RCONH_2 is converted into RNH_2 by means of Hofmann bromamide degradation. In this RCONHBr is formed form which this reaction has derived its name. Electron-donating group at phenyl activities the reaction. Hofmann degradation reaction is an intramolecular reaction. Which is the rate-determining step in Hofmann bromamide degradation ?

RCONH_2 is converted into RNH_2 by means of Hofmann bromamide degradation. In this RCONHBr is formed form which this reaction has derived its name. Electron-donating group at phenyl activities the reaction. Hofmann degradation reaction is an intramolecular reaction. Which is the rate-determining step in Hofmann bromamide degradation ?

RCONH_2 is converted into RNH_2 by means of Hofmann bromamide degradation. In this RCONHBr is formed form which this reaction has derived its name. Electron-donating group at phenyl activities the reaction. Hofmann degradation reaction is an intramolecular reaction. What are the constituent amines formed when the mixture of (1) and (2) undergoes Hofmann bromamide degradation ? (1) (2) .

RCONH_2 is converted into RNH_2 by means of Hofmann bromamide degradation. In this RCONHBr is formed form which this reaction has derived its name. Electron-donating group at phenyl activities the reaction. Hofmann degradation reaction is an intramolecular reaction. Hoe can the conversation of (i) to (ii) be brought about ?

Statement-1: Ethyne is stronger acid than ethene. and Statement-2 Introduction of alkyl group activates benzene ring

Statement-1 : Electronegativity of an element depends on ionisation energy of that element. Statement-2 : Electroegativity regularly decreases along the group. Statement-3 : Fluorine is the most electronegative element.

Statement 1: Amines are less basic than alcohols. Statement-2: Secondary amines give carbylamine reactions. Statement-3: in Hofmann-bromide reaction amide is converted to amines with same number of carbon atom.

Statement-1: p-Nitroaniline is more polar than nitrobenzene and Statement-2: Nitro group has -M effect. (a) Statement-1 is true, Statement-2 is true, Statement-2 is a correct explanation for Statement-1 (b) Statement-1 is true, Statement-2 is true, Statement-2 is not a correct explanation for Statement -1 (c) Statement -1 is true, Statement -2 is false (d) Statement -1 is false, Statement -2 is true

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