Chemistry, asked by aashika5653, 1 year ago

when we react chlorobenzene with mg and dry Ether then no reaction takes place but when we react bromobenzene with mg and dry Ether it converts into Grignard reagent why​

Answers

Answered by GeN21
2

There may be two reasons.

First, chloride ion has much smaller size than bromide ion. This causes difficulty in removing the chloride ion from benzene because of shorter, compact bonds which are more difficult to break than longer, weaker bonds of Bromine.

Second, chloride ion has a much greater -I effect than bromine, the above statement being the cause.

Hope it helps.


aashika5653: hey is my question is crect....i don't know I feel both of them react with Mg and ether ....plzzzz anwer me
GeN21: Chloro benzene very rarely reacts with mg and ether. So rarely that iit is assumed it doesnt. Try not to react chlorobenzene with Mg and ether
GeN21: Try to convert chlorobenzene to iodo benzene using P+I2 .
GeN21: Then the rxn becomes feasible
aashika5653: so is it the case with all type of halorene
GeN21: No no
GeN21: Only with flouro and chlorobenzene
aashika5653: ooohkkk thanku so much ....
GeN21: no problem anytime
Answered by wwwjeromesan2020
0

Chlorobenzene + 2Na(in presence of dry ether) -------->Benzene + 2NaCl

Similar questions