Elementary (Hive Addict)
06-12-02 13:43
No 320196
       Styrene > Hydratropic Aldehyde  Bookmark   

This looks interesting smile

Patent US3379768

Abstract :

Hydratropic aldehyde is prepared by ozonizing the linear dimer of styrene and decomposing with a palladium catalyst in an aqueous medium containing suitable organic solvents. The hydratropic aldehyde is separated from benzaldehyde, which is also produced by the present process, in a pure state suitable for use in perfumes.



And what can hydratropic aldehyde be easily converted to ???? yes P2P wink
John Lennon - Working Class Hero 		 
 
 
 
    Elementary
(Hive Addict)
06-12-02 17:15
No 320250
       Comments and Q  Bookmark   

Most organic ozonides are explosive, as for the ozonide formed here I just can't say either way.

I can only assume that the palladium used decomposes the ozonide in a controlled tame fashion.

Ozone can be easy generated by exposing oxygen to ultra violet light, see here for more info :
http://www.ozonegeneratorairpurifierwastewatertreatmentpurification.com/ozone.htm

If this ozonide stage could be replaced by another method, we would have ourselves a great bulk method for the production of P2P using easily available chemicals.

Can anybody describe how a "Flash Distillation" is performed ?
John Lennon - Working Class Hero 		 
 
 
 
    Elementary
(Hive Addict)
06-12-02 18:35
No 320284
       Info links  Bookmark   

http://www.cordis.lu/tmr/src/grants/fmbi/960833.htm

http://www.unil.ch/cost/chem/docs/D10/d10-01-98.htm

"A Novel Synthetic Method of Hydratropic Aldehyde", maybe someone has access to this doc or a translation ?
http://periodicals.wanfangdata.com.cn/qikan/periodical/gdxxhxxb/gdxx2001/0108/0108mle.htm

John Lennon - Working Class Hero 		 
 
 
 
    Osmium
(Stoni's sexual toy)
06-12-02 21:08
No 320356
       > www.ozonegeneratorairpurifierwastewatertreatm...  Bookmark   

> www.ozonegeneratorairpurifierwastewatertreatmentpurification.com/

Who comes up with such domain names?!?
I'm not fat just horizontally disproportionate. 		 
 
 
 
    Rhodium
(Chief Bee)
06-12-02 21:21
No 320359
       The shorter ones were already taken ;-)  Bookmark   

The shorter ones were already taken wink

  
 
 
 
    Elementary
(Hive Addict)
06-14-02 16:38
No 321228
       Examples of Ozonolysis  Bookmark   

Ozone is bubbled though a solution of the alkene in carbon tetrachloride.



Oxidation of alkenes through ozonides.



Ozonolysis of an olefin :

http://www.ch.ic.ac.uk/local/organic/18.html

Comment :

So it seems that palladium can be replaced with sulphuric acid (according to patent), or the reduction/degradation can be performed with Zinc powder.
John Lennon - Working Class Hero