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Maja
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I think DCM is OK ... I used to use DCM for Anhydrous AlCl3...
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sonogashira
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Thanks maja.. I've actually been able to find a paper which uses a solution of AlCl3 in DCM, but it did also say that it is not very soluble. Don't
suppose anyone has (or knows where to get) data on exactly how soluble it is in DCM?
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Maja
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sonogashira, for what purpose you need AlCl3 solution ? What you are going to do ... Not all the time you need to dissolve it ...
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sonogashira
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Just a friedel crafts acylation. Not to make anything in particular, just to give it a try. I can get toluene and acetyl chloride so i was hoping to
try this. (note that i dont intend to do it any time in the near future, i appreciate that my chemistry knowledge and experience is very much lacking,
so please dont tell me not to bother!!)
I'm just interested in how soluble it is in DCM anyway, not particularly in relation to this reaction, but perhaps for something else in the future.
Perhaps you are right and i dont have to dissolve it. i would still be interested as to how soluble it is in DCM, is there some book which lists this
kind of data?
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The_Davster
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I have done a few F/C alkyl/acylations at Uni. Dissolving the chloride is unnecessary, just toss it in and the rxn starts very vigorously.
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Eclectic
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I read somewhere that AlCl3 is VERY soluble in diethyl ether. There was even a procedure for purification involving distilling the 1:1 adduct. Now
where did I put that reference....
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sonogashira
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Oh right, thats great, so its ok to use an excess of the catalyst? Would there be side reactions if one were to use too much with other reactions (ie
not friedel crafts) or can it always be used in excess?
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Maja
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Yes, rogue chemist is right .... I have tried to demethylate vanillin ... You really don't need to dissolve it all .... Stirring helps alot ...
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