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Grade:
        How to prepare butanol from ethyl magnesium bromide? ????
11 months ago

Answers : (3)

Arun
17969 Points
							
Dear student
 
This is a little tricky; you can't get 1-butanol by using ethyl magnesium bromide to attack a carbonyl, because the -OH group ends up in the wrong place. You need to attack something else: an epoxide. 

A Grignard will open an epoxide ring, giving an anionic oxygen that can be protonated. If you attack ethylene oxide, also called oxirane, with ethyl magnesium bromide, you'll get 1-butanol.
 
 
 
Regards
Arun (askIITians forum expert)
11 months ago
S.G PANDA
25 Points
							Sir thank u thank u very much... Now i can solve this one by using epoxide and hydrolysing the product... hats off sir...
						
11 months ago
Vishal Jagwani
25 Points
							React it with ethanal in presence of dry ether. Further on treating with H2O and dil HCl,it will form butanol and MgBrOHGood luck!!
						
11 months ago
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