To use all functions of this page, please activate cookies in your browser.
My watch list
my.chemeurope.com
my.chemeurope.com
With an accout for my.chemeurope.com you can always see everything at a glance – and you can configure your own website and individual newsletter.
- My watch list
- My saved searches
- My saved topics
- My newsletter
Fritsch-Buttenberg-Wiechell rearrangementThe Fritsch-Buttenberg-Wiechell rearrangement, named for Paul Ernst Moritz Fritsch, Wilhelm Paul Buttenberg, and Heinrich G. Wiechell, is a chemical reaction whereby a 1,1-diaryl-2-bromo-alkene rearranges to a 1,2-diaryl-alkyne by reaction with a strong base such as an alkoxide.[1][2][3][4] This rearrangement is also possible with alkyl substituents.[5] Product highlight
Reaction MechanismThe strong base deprotonates the vinylic hydrogen, which after alpha-elimination forms a vinyl carbene. A 1,2-aryl migration forms the desired product, the 1,2-diaryl-alkyne. ScopeOne study explored this reaction for the synthesis of novel polyynes [6] [7]: References
See also |
|
| This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Fritsch-Buttenberg-Wiechell_rearrangement". A list of authors is available in Wikipedia. |
Last viewed
- VAPODEST | Sistemas de analisadores Kjeldahl | C. Gerhardt
- Titration Theory and Practice - A practical guide - Insights into the basics, methods and application areas of titration
- Electronics based on a two dimensional electron gas - A new material could open the door to a new kind of electronics: researchers at the Vienna University of Technology have created a stable two-dimensional electron gas in strontium titanate.
- Electrochaea grows and expands its headquarters - Climate-neutral gas from green hydrogen and captured CO2
- Revolutionary images of the birth of crystals - A team from the UNIGE has succeeded in visualizing crystal nucleation - the stage that precedes crystallization - that was invisible until now
