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Wolff rearrangement When alpha-Diazok...

Wolff rearrangement
When `alpha`-Diazoketones are photo-irradiated or heated at high temperature or reacted with silver oxide or silver salts at room temperature, they loose nitrogen and rearrange to form ketene.
The ketenes reacts rapidly with water, alcohol and amines. Therefore, the reactions called Wolff-rearrangement.

Product (A) is :

A

`Ph-Ch=CH-OH`

B

`Ph-CH=CH-OCH_(3)`

C

`CH_(3)-CH=CH-O-PH`

D

`CH_(3)-CH=CH-OH`

Text Solution

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The correct Answer is:
B
Insertion reaction
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Wolff rearrangement When alpha -Diazoketones are photo-irradiated or heated at high temperature or reacted with silver oxide or silver salts at room temperature, they loose nitrogen and rearrange to form ketene. The ketenes reacts rapidly with water, alcohol and amines. Therefore, the reactions called Wolff-rearrangement. Major product of the reaction is :

Wolff rearrangement When alpha -Diazoketones are photo-irradiated or heated at high temperature or reacted with silver oxide or silver salts at room temperature, they loose nitrogen and rearrange to form ketene. The ketenes reacts rapidly with water, alcohol and amines. Therefore, the reactions called Wolff-rearrangement. Ph-underset(14)overset(O)overset(||)C-CHN_(2)underset(H_(2)O)overset(Ag_(2)O)to (A) , Product (A) is :

Wolff rearrangement When alpha -Diazoketones are photo-irradiated or heated at high temperature or reacted with silver oxide or silver salts at room temperature, they loose nitrogen and rearrange to form ketene. The ketenes reacts rapidly with water, alcohol and amines. Therefore, the reactions called Wolff-rearrangement. HO-CH_(2)-CH_(2)-CH_(2)-overset(O)overset(||)C-CHN_(2) underset(Delta)overset(Ag_(2)O)to (A) , Product (A) is :

Write the IUPAC name of the product formed when aniline reacts with bromine water at room temperature and the equation for the reaction.

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