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Author: Subject: use of peroxides in chemistry.
quantumcorespacealchemyst
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[*] posted on 17-2-2015 at 07:53
use of peroxides in chemistry.


On http://en.wikipedia.org/wiki/Methaneseleninic_acid
It says "Seleninic acids can be prepared by oxidation of selenoesters with one equivalent of dimethyldioxirane (DMDO). Use of excess DMDO affords little studied selenonic acids (RSeO3H).

RSeC(O)R' + DMDO → RSeO2HRSeC(O)R' + excess DMDO → RSeO3H"

The DMDO thing has me re-wondering if peroxides formed in ether can be used in chemical reactions.

It says on http://en.wikipedia.org/wiki/Dimethyldioxirane that DMDO is considered a monomer of acetone peroxide, which has me wondering if the route of preperation of DMDO in situ can be done with H2O2 in acetone in place of Potassium peroxymonosulfate/oxone in acetone.

According to http://en.wikipedia.org/wiki/Acetone_peroxide "In mildly acidic or neutral conditions, the reaction is much slower and produces more monomeric organic peroxide than the reaction with a strong acid catalyst."

1 DMDO is said that it can be considered the monomer of acetone peroxide and the page about Methane selinic acid says selenic acid (2 O on Selenium) can be made with exess DMDO, it leaves out how that acid is separated unless it is stoichiometric and there is no exess peroxide/DMDO to be concerned about with in the liquor. I assume here that the phases are seperatable and there is a further treatment of the organic phase to decompose the DMDO/peroxide.

unless I have this wrong DMDO is explosive, and is prepared prior to use for reactions. so, I am wondering how peroxides of diethyl ether and other peroxides such as acetone peroxide can be used in chemical synthesis.

[Edited on 17-2-2015 by quantumcorespacealchemyst]
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