fastbre4k
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Phenyllithium attemt
Hey,
i tried to preparate Phenyllithium.
in 150ml of Chlorobenzene was added 2g of lithium (fine strips)(from battaries) - then i started a reflux. Within 5 minutes i noticed a color change
from , first light green and then going into dark yellow.
I guess that : https://en.wikipedia.org/wiki/Aryne
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PirateDocBrown
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You dropped the Li directly into the PhCl?
Next time, try a solvent. Dry Et2O or THF, for example.
Sparge your reactant/solvent with inert gas before adding the metal, and exclude atmospheric O2 from the reaction.
You will get better results with PhBr.
Also, a catalytic amount of Na metal has always helped me a bit.
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fastbre4k
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Jea - directly
mhm - next time with solvent - i guess xylene would work?
inert gas i have - N2
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draculic acid69
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So how did it go with xylene?
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S.C. Wack
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Not well I bet.
It's not an oversight that the directions (edit: e.g. OS CV2 page 517) say bromobenzene and ether (preferably with a bit of sodium) and don't say feel
free to substitute with chlorobenzene and xylene.
[Edited on 24-9-2018 by S.C. Wack]
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JJay
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Phenyllithium will react with xylene, exchanging a benzylic hydrogen per methyl group for lithium. It will also react with toluene.
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