chemrox
International Hazard
Posts: 2961
Registered: 18-1-2007
Location: UTM
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Mood: LaGrangian
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allylbenzene distillation issue
After being quoted some really ridiculous prices for allylbenzene I decided to make it. I followed a published (H E Carter, J Biol Chem 108, 619
(1935) procedure using a Grignard reagent and allyl Br. Distilling the material after breaking up the complex with dilute acid I collected some
residula material at 45*/aspirator vac and again with a new flask at 65-75* I ran an air bubbler and immediately got a visible vapor on top of the
distillate that will not condense in the glassware. I changed from air to N2 with no change. ( Stirring would not prevent the foaming from
overwhelming the still.) What might that be? (I ran a rotary evap on the stuff before distilling).
Second, why not make this from benzene and allyl-Br with AlCl3?
"When you let the dumbasses vote you end up with populism followed by autocracy and getting back is a bitch." Plato (sort of)
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sparkgap
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Registered: 16-1-2005
Location: not where you think
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I mentioned in passing in my thread alkylating benzenes with polyenes via Friedel-Crafts would most probably result in a "mess". That was because I
found, among other things, this paper. Made me sad, too.
sparky (~_~)
"What's UTFSE? I keep hearing about it, but I can't be arsed to search for the answer..."
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