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Author: Subject: Developing TLC for Ketone?
overunity33
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[*] posted on 16-11-2010 at 23:32
Developing TLC for Ketone?


I'm interested in developing a TLC plate (filter paper) for the presence of a ketone (mdp2p), what would be the best reagent? I can't get 2,4-DNPH... Would iodine vapors work? Is there a procedure for the iodoform test on a TLC plate? Anyone have advice?
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azo
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[*] posted on 17-11-2010 at 16:24


i think if you have mdp2p you would would no. ! you cant miss a aromatic ketone smell anywhere. yummy :P




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chemrox
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[*] posted on 17-11-2010 at 22:24


either I2 or con H2SO4 spray would visualize the spots. A mixture of benzene and ethyl acetate might separate the side reax from the product. I've been using 150 DCM/40 et-Ac/ 30MeOH trc Et3N for awhile and it usually effects adequate sep for most purposes. I have a developing tank with I2 in a small beaker. Warmed a bit I see the results in a few minutes. I2 will attach itself to almost any aromatic ... H2SO4 fries almost any organic but its tricky to spray...ninhydrin also works but is costly.



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