The Vespiary

The Hive => Novel Discourse => Topic started by: PolytheneSam on December 06, 2002, 04:12:00 AM

Title: Epoxide to ketone using MgCl2
Post by: PolytheneSam on December 06, 2002, 04:12:00 AM
MgCl2 works as a  catalyst for converting epoxides to ketones.

(https://www.thevespiary.org/rhodium/Rhodium/hive/hiveboard/picproxie_docs/000386685-file_jpww.jpg)

from Mono-Olefins, Chemistry and Technology by F. Asinger 1968

see also

Patent US4731482 (http://l2.espacenet.com/dips/viewer?PN=US4731482&CY=gb&LG=en&DB=EPD)



http://www.geocities.com/dritte123/PSPF.html (http://www.geocities.com/dritte123/PSPF.html)


The hardest thing to explain is the obvious
Title: MgCl2
Post by: Rhodium on December 06, 2002, 07:38:00 AM
Magnesium Chloride is significantly cheaper than Lithium Iodide - What is reference 47?

The Carlo Venturello patent above is the same as

https://www.thevespiary.org/rhodium/Rhodium/chemistry/peroxotungstate.html (https://www.thevespiary.org/rhodium/Rhodium/chemistry/peroxotungstate.html)

Title: more available too
Post by: starlight on December 06, 2002, 10:45:00 AM
A quick search on google shows that MgCl2 hexahydrate seems to have a few OTC sources.
Title: reference 47
Post by: PolytheneSam on December 06, 2002, 12:35:00 PM
47 refers to
H. Koch & H. Van Ray, Brennst.-Chemie 32, 161-74 (1951)
What is Brennst.-Chemie?

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The hardest thing to explain is the obvious
Title: a (good?) guess...
Post by: hypo on December 06, 2002, 12:43:00 PM
brennstoff chemie
journal on combustibles and their refined products
Title: ref?
Post by: hypo on December 07, 2002, 12:07:00 PM
sam: are you sure that this is the right reference? i had a look through
the article (provided by lugh), but i couldn't find anything about
acetone or magnesium halides. the whole article is about isomerisation
equilibria of hexenes. (possible that i fell asleep during reading the
thing, the topic wasn't all too exciting...)
Title: I'll have to check the book again.
Post by: PolytheneSam on December 07, 2002, 04:10:00 PM
I'll have to check the book again.  Its at the library.

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The hardest thing to explain is the obvious
Title: 47
Post by: PolytheneSam on December 09, 2002, 06:52:00 PM
It appears that 47 refers to DE 1119246 and Chem. Abstr. 57, 7176i (1962)

Patent DE1119246 (http://l2.espacenet.com/dips/viewer?PN=DE1119246&CY=gb&LG=en&DB=EPD)


I must have looked at the end of the wrong chapter the last time.

From espacenet this appears to be the British equivalent:

Patent GB905821 (http://l2.espacenet.com/dips/viewer?PN=GB905821&CY=gb&LG=en&DB=EPD)



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The hardest thing to explain is the obvious
Title: US 4734529 etc.
Post by: PolytheneSam on December 19, 2002, 03:41:00 AM
Here's something which uses K or Na iodide and PEG.  MDP2P seems to be listed in table 1.

Patent US4734529 (http://l2.espacenet.com/dips/viewer?PN=US4734529&CY=gb&LG=en&DB=EPD)



This looks interesting, too.

Patent US3935272 (http://l2.espacenet.com/dips/viewer?PN=US3935272&CY=gb&LG=en&DB=EPD)

olefins to epoxides and ketones

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The hardest thing to explain is the obvious
Title: Very interesting. They say that safrole-epoxide ...
Post by: Osmium on December 19, 2002, 02:25:00 PM
Very interesting. They say that safrole-epoxide can be isomerised to MDP2P with NaI/PEG in 80-90% conversion. Yield of end product, at least for isosafrol epoxide is lower however. Maybe it could be improved?
I'm not fat just horizontally disproportionate.