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Author: Subject: Grignard
Lolita
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[*] posted on 6-3-2014 at 02:15
Grignard


Hi,
Im doing grignard reaction.. My compound is not getting dissolved in Diethyl ether. and as we dont have THF i have no choice.. My compound is an ester(solid).. im very sure that the reagent is formed. but after adding my compound the reaction is not going. I couldnt figure out the reason.
I did the same reaction with benzyl bromide, it was positive. But with 1 bromo hexane is never goes for me. Could you guys plz help me with this???






[Edited on 6-3-2014 by Lolita]
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Nicodem
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6-3-2014 at 09:52
Metacelsus
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[*] posted on 6-3-2014 at 10:53


Could you be more specific (reaction conditions, substrate, etc.)?

Are you trying to react hexylmagnesium bromide with an ester?

Is the problem that the substrate is insoluble in ether?




As below, so above.

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Lolita
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[*] posted on 10-3-2014 at 03:08


Yes. I tried with 1-Bromo hexane, and the ester which im trying with is not getting dissolved in ether. and actually Mr. cheese when i tried grignard with the same ester using Bromo benzene, I got product.
I couldnt identify the problem, Im just guessing that the dissolution of My ester in ether might be the problem as I could see the generation of the grignard reagent (complete dissolution of Mg turning, and dirty colour liquid).
Im doing the reaction under Nitrogen atmosphere. Im using a condenser, a connecter (where one opening to the nitrogen cylinder, one to the condenser and one to a balloon filled with nitrogen).
Thank you so much :)
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