Author Topic: Very Crude BzCl -> Grignard ??  (Read 2762 times)

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Bwiti

  • Guest
Very Crude BzCl -> Grignard ??
« on: July 04, 2002, 04:22:00 AM »
Provided that the Mg used is fresh turnings, could a Grignard be made from the crude benzyl chloride produced from bubbling HCl through benzene/zinc chloride(Yes, I'm talking about after the benzyl chloride's washed and dried). I know that a little benzene won't hurt, but I don't know about biproducts like benal chloride and trichloride?? :P

Love my country, fear my government.

Rhodium

  • Guest
Dirty grignard
« Reply #1 on: July 04, 2002, 06:29:00 AM »
?? You cannot make benzyl chloride from benzene/ZnCl2 - what did you intend to write?

Anyhow, trying to use dirty precursors in a grignard is just asking for side-reactions (polymerization with polyhalogenated derivatives happens pretty easily).

Entropy just isn't what it used to be.

Bwiti

  • Guest
that sucks
« Reply #2 on: July 05, 2002, 07:08:00 AM »
I was talking about the chloromethylation of benzene synth on your site(

https://www.thevespiary.org/rhodium/Rhodium/chemistry/benzylchloride.html

), or from T.S.2. - Washing the produced benzyl chloride, drying it, and making a Grignard from it without distilling it. So, I guess I'm better off just using the BzCl in a benzaldehyde synth.

Love my country, fear my government.

Aurelius

  • Guest
Hey Bwiti
« Reply #3 on: July 05, 2002, 05:38:00 PM »
Hey Bwiti, you needed some formaldehyde in there somewhere.   are you trying to get around distilling the stuff?  what's the purpose in using crude versus cleaning it before usage?

Bwiti

  • Guest
"are you trying to get around distilling the ...
« Reply #4 on: July 05, 2002, 07:38:00 PM »
"are you trying to get around distilling the stuff?"

  Yes, but I think I'll at least distill off the benzene before converting the BzCl to benzaldehyde. I have plenty of formaldehyde, but I'd rather use paraformaldehyde to reduce the amount of water in the reaction.
  Hey, I noticed that you found that new allylbenzene synth(from styrene/DMSO). Surprised that hasn't gotten more attention! I'm sure excited about it! ;)

Love my country, fear my government.