nutlin (Newbee)
12-08-02 00:47
No 387276
      phorone  Bookmark   

DOES anyone out there have a simple synth for phorone?

Any ideas on purification etc?

 
 
 
 
    Rhodium
(Chief Bee)
12-09-02 13:35
No 387779
      Give us more information, such as the chemical ...  Bookmark   

Give us more information, such as the chemical structure first.
 
 
 
 
    Kinetic
(Hive Bee)
12-09-02 19:14
No 387845
      Phorone  Bookmark   

Phorone, CAS#504-20-1, 2,6-Dimethyl-2,5-heptadien-4-one; Diisopropyllideneacetone

From http://www.sciencemadness.org/library/diphoronepentaperoxide.html (the name says it all):

The following patent information was graciously translated from the original German by Hoffmann-LaRoche:

German patent DE 1951660.

1969

Diphoronepentaperoxide C18H26O2(O2)5

field of invention: the invention refers to an explosive which has special properties that make it suitable especially for mining and as well for military purposes.

Task: The invention wants to make blasting operations cheaper and easier.

Solution: Following cheap substances are required for synthesis:

1part conc. hydrochloric acid(HCl)
1part acetone (CH3COCH3)
2parts 30% hydrogen peroxide(H2O2)

Process of manufacture:

1 part of acetone are added to 1 part hydrochloric acid, through which acetone polymerizes to phorone; then 2 parts of hydrogen peroxide are added, through which two molecules of HCl bond with the two C-double-bonds of the phorone.
In the course of the reaction free chlorine develops, which bonds with 3 hydrogen atoms of the phorone to give 3 HCl(see drawing) and bonds itself with phorone.

Hydrogen peroxide causes the chlorine atoms to split off the phorone and the peroxide itself bonds with the phorone. Because of the fact that one peroxy-bond stays half-opened, one also open phoroneperoxide adds to give diphoronepentaperoxide, which precipitates from the solution in crystalline form.

Properties:
a) insoluble in water
b) still explosive when heavily contaminated
c) detonation velocity approx. 9000m/s
d) low detonation temperature approx. 200C
e) does not develop smoke upon detonation, does not smell, no solid residues.
f) ignition by fire, blasting cap or electric
g) does not decompose at long storage
h) yield of manufacturing process approx. 90%


The question is though, why do you need phorone? I hope it isn't because of it's properties once the two parts of hydrogen peroxide are added; I expect you are just a worried producer of 'Emperor' mandarins or 'Marsh' grapefruit, see http://pustaka.bogor.net/iptek/dtbaru/hor1345.htm:


Application of phorone vapour had been effective to reduce chilling injury development of 'Emperor' mandarin and 'Marsh' grapefruil during storage at 0 deg. C for 10 and 12 weeks respectively. It has also suppressed the accumulation of putrescine and alpha-farnesene and stimulated the production of squalene. Although Phorone had effectively to reduce chilling injury incidence, but for a commercial application it needs further investigation especially on effect of phorone to human hazard


I'll give you the benifit of the doubt this timesmile.