Author Topic: Epoxide to ketone using MgCl2  (Read 3031 times)

0 Members and 1 Guest are viewing this topic.

PolytheneSam

  • Guest
Epoxide to ketone using MgCl2
« on: December 06, 2002, 04:12:00 AM »
MgCl2 works as a  catalyst for converting epoxides to ketones.



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

see also

Patent US4731482




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


The hardest thing to explain is the obvious

Rhodium

  • Guest
MgCl2
« Reply #1 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


starlight

  • Guest
more available too
« Reply #2 on: December 06, 2002, 10:45:00 AM »
A quick search on google shows that MgCl2 hexahydrate seems to have a few OTC sources.

PolytheneSam

  • Guest
reference 47
« Reply #3 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?

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


The hardest thing to explain is the obvious

hypo

  • Guest
a (good?) guess...
« Reply #4 on: December 06, 2002, 12:43:00 PM »
brennstoff chemie
journal on combustibles and their refined products

hypo

  • Guest
ref?
« Reply #5 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...)

PolytheneSam

  • Guest
I'll have to check the book again.
« Reply #6 on: December 07, 2002, 04:10:00 PM »
I'll have to check the book again.  Its at the library.

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


The hardest thing to explain is the obvious

PolytheneSam

  • Guest
47
« Reply #7 on: December 09, 2002, 06:52:00 PM »
It appears that 47 refers to DE 1119246 and Chem. Abstr. 57, 7176i (1962)

Patent DE1119246


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://www.geocities.com/dritte123/PSPF.html


The hardest thing to explain is the obvious

PolytheneSam

  • Guest
US 4734529 etc.
« Reply #8 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



This looks interesting, too.

Patent US3935272

olefins to epoxides and ketones


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


The hardest thing to explain is the obvious

Osmium

  • Guest
Very interesting. They say that safrole-epoxide ...
« Reply #9 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.