ClearLight (Hive Addict)
11-13-02 12:12
No 379360
      Chinese Microwave red. of Ketones w/ NaBH4  Bookmark   

The chinese use a household oven, here is the link to the article, perhaps some one can figure out how to capture it for Rhod's page..

http://nr.stic.gov.tw/ejournal/ChiChemSociety/1999/EJ52-1999-509.tif

  I believe that the large excess of NaBH4 is because they keep trying to do it on a substrate without any liquid, ie: dry conditions... it would probablly work better on a substrate in a liquid suspension...



Infinite Radiant Light - THKRA
 
 
 
 
    Rhodium
(Chief Bee)
11-13-02 12:46
No 379365
      NaBH4 microwave.  Bookmark   

It is available in PDF from the homepage of J. Chin. Chem. Soc. too.

http://www.sinica.edu.tw/~ccswww/zj-OR-1999-P509.pdf
 
 
 
 
    terbium
(Old P2P Cook)
11-13-02 20:13
No 379510
      Microwave chemistry is mostly a gimmick, IMHO.  Bookmark   

it would probablly work better on a substrate in a liquid suspension...
And it would probably work even better in methanol at room temperature.


Baseline Does Not Exist.
 
 
 
 
    ClearLight
(Hive Addict)
11-14-02 10:37
No 379656
      PDF  Bookmark   

Thx! I couldn't get that stupid quicktime plugin to give me more that one page...


Infinite Radiant Light - THKRA
 
 
 
 
    SPISSHAK
(Hive Bee)
11-16-02 17:31
No 380368
      You know there was n article I read where they  Bookmark   

doing similar reactions (reductive aminations of ketones) using this system on clay, or zeolit supports in a microwave.
Anyway the chemist would place a bowl filled with dry ice/alcohol slush on top of the beaker while the mix was being microwaves when dealing more volitile amines to recondense them.