RE: ORGLIST: TLC visualization of alkyl halides

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From: Ilya Avrutov (IAvrutov$##$dalton.com)
Date: Fri Jun 16 2006 - 11:17:22 EDT

Hello,
Here is the method from the book "Thin-layer chromatography" (Ed. By E.
Stahl)for chlorinated hydrocarbons:
Spray reagent: 0,1 g AgNO3 is dissolved in 1 ml of water and 10 ml
phenyl cellosolve (2-phenoxyethanol) added. This solution is made up to
200 ml with acetone and 1 drop 30% H2O2 added.
Treatment after spraying: The layer is irradiated with infiltered UV
light. Alumina layers must be exposed ~50 min and silica gel layers up
to 15 min if long-wave UV light is used. Dark spots are formed.

Best regards,
Ilya

------------------------------------
Dalton Pharma Services
Ilya Avrutov
Process Development Group Leader
iavrutov$##$dalton.com
349 Wildcat Rd. Toronto ON M3J 2S3
tel: 416-661-2102 (320)
fax: 416-661-2108
mobile: 416-726-2556
------------------------------------

-----Original Message-----
From: everybody-bounces$##$orglist.net
[mailto:everybody-bounces$##$orglist.net] On Behalf Of cardman
Sent: Thursday, June 15, 2006 10:24 PM
To: everybody$##$orglist.net
Subject: ORGLIST: TLC visualization of alkyl halides

Can someone recommend a TLC visualization reagent for simple alkyl
halides (like dibromoethane)? I tried conc. sulfuric acid but it doesn't
work very well and it can be quite messy. PMA doesn't work at all.
Thanks.

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