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Author: Subject: Ozonolysis help?
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[*] posted on 8-1-2021 at 10:54
Ozonolysis help?


I'm making a HV ozone generator and trying to plan ozonolylation experiments but in researching articles and textbooks about it, the format seems to be ordered as "Compound+Solvent/ozone=X Product + Y Coproduct. Which is very confusing to me, I must be missing something. In my mind navigation of ozonolysis products should be ordered by product in navigation. Such as X product + Y coproduct= A Compound+B Solvent/ozone. So when researching it for possible products, it's been slow and hard to get a big picture.. Are there any resources that categorize by product instead of reactants?
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[*] posted on 16-1-2021 at 02:36


Not the most common lab procedure. Kind of industrial. It used to be a common source of items like Heliotropine and Vanillin. Might be some material in Vogel.

https://pdfpiw.uspto.gov/.piw?Docid=02916499&homeurl=htt...

There are some references in the search engine, under ozone.

http://www.orgsyn.org/demo.aspx?prep=CV3P0673

Basic device.

Try looking up Org. Syn. Ozone

This should provide numerous examples.

[Edited on 16-1-2021 by zed]

[Edited on 16-1-2021 by zed]

[Edited on 16-1-2021 by zed]
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[*] posted on 18-1-2021 at 03:47


I looked upon ozonation oxidation just and thought that I can take a plastic box, put good seals on the lid and pull two tubes, one comes from air pump feeding air into it, and other goes into line that bubbles it through the reaction. The air feed rate doesn't have to be too tremendous, and the ozone content should build up rapidly if the generator has even a little more capacity than the feed air volume is.

I've got an ozone generator that is stated to produce 28g of ozone per hour, and it is sized of a small lunchbox. I doubt the number, but it definitely produces ozone, as it was able to deodorize a room overnight.
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[*] posted on 21-1-2021 at 11:15


Thank you Zed. Here is a publication on ozonolysis.

Attachment: Ozonation in Organic Chemistry.pdf (4.1MB)
This file has been downloaded 536 times

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[*] posted on 21-1-2021 at 17:55


There's nothing like introducing a topic by dedicating it to your friend who was killed by his interest in it (from the third page of the previously posted reference):


Quote:

This book is dedicated to the memory of the author's esteemed friend,
colleague, and mentor, the late Prof essor Rudolf Criegee of the University
of Karlsruhe, West Germany.
His dedication to chemistry, especially ozone chemistry, was so intense
that even while weakened with emphysema (perhaps caused by breathing
ozone fumes in his makeshift laboratory after World War II) he worked
against time in his laboratory until the work was complete which helped
remove all remaining doubt concerning the validity of the carbonyl oxide
mechanism of ozonolysis, known as the Criegee mechanism. Less than a
year later he died.
Professor Criegee will always live in the memories of those who knew
him as the epitome of a true gentleman, a dedicated scientist and teacher,
and a genuine friend.
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