11-23-01 17:41
No 239698
May bee of interest for the more theroetical bees...
http://www.bias-net.com/chimica/pdf/chi_
contains a review divided into the following parts:
- asymmetric oxidation;
- asymmetric hydroboration;
- asymmetric isomerisation;
- asymmetric hydrocyanation;
- asymmetric aldol.
Carpe Die,
(Hive Addict)
11-23-01 19:49
No 239713
These reactions are amazing and so applicable to our area of interest, but unfortunately the catalysts are all but impossible to find outside of industry and academia, and nearly impossible to synthesize from readily available chemicals.
Good read tho!
(Chief Bee)
11-23-01 20:24
No 239716
There was a synthesis of Jacobsen's catalyst in Journal of Chemical Education recently, and it was directed towards undergraduate students, and it did not seem too hard.
(Hive Addict)
11-24-01 02:09
No 239810
Rhod, this synthesis looks relatively challenging (not so much the chemistry, but the chemical acquisition).
Btw, will manganese acetate act as catalyst for epoxide formation? Or, are there any other more simple ligands which can be used that are not enantioselective?
(Stoni's sexual toy)
11-25-01 01:32
No 240117
> are there any other more simple ligands which can be used
> that are not enantioselective?
Probably not quite what you asked for, but do a search for Sharpless epoxidation, which was one of the breakthroughs in enantioselective synthesis.
http://www.scripps.edu/news/press/012100
http://www.monomerchem.com/sharplessepox