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Chemistry Forums for Students => Organic Chemistry Forum => Topic started by: djds on February 22, 2005, 03:21:08 PM

Title: Oxidation, iodation, sulfuration. *delete me*!!
Post by: djds on February 22, 2005, 03:21:08 PM

Hello! I need something about following things. It is very important to me:

1. Oxidation of carboxylic acids to chinones with presence of diiode pentaoxide (I2O5), potassium peroxodisulphate (K2S2O8), potassium permanganate (KMnO4) or potassium dichromate (K2Cr2O7);

2. Iodation. Inserting of iodium to the hydroxochinaldine acids ring by using diiode pentaoxide (I2O5);

3. Sulfuration of hydroxochinaldine acids by using tetraphosphorus decasulphide (P4S10);

4. Anything about Lawesson reagents.

I rely on your help because it is a very important case to me.
My e-mail: djds@poczta.onet.pl
Thanks a lot!

Title: Re:Oxidation, iodation, sulfuration. *delete me*!!
Post by: movies on February 22, 2005, 03:32:28 PM

Quote from: djds on February 22, 2005, 03:21:08 PM

4. Anything about Lawesson reagents.

What do you need to know?

There is a very good mechanistic paper by Rauchfuss.  The reference is Tetrahedron Lett. 1986, 27, 3445-8.

Title: Re:Oxidation, iodation, sulfuration. *delete me*!!
Post by: AWK on February 23, 2005, 04:22:53 AM

How to use I2O5 read from:
J. Org. Chem. 61 (1996) 9621-2
JCS Perkin2, 1988, 933-6
http://pages.unibas.ch/mdpi/ecsoc-4/a0004/a0004.htm