Related Experiment Videos
Synthesis of the first 1,2,3,4-azatriphospholene complex
Nils Hoffmann1, Cathleen Wismach, Peter G Jones
1Institut für Anorganische und Analytische Chemie, Technischen Universität Braunschweig, Postfach 3329, D-38023 Braunschweig, Germany.
Chemical Communications (Cambridge, England)
|July 18, 2002
Summary
Researchers synthesized the first azatriphospholene complex using a tungsten complex and a phosphonio cyanomethylide ylide. This study provides new insights into the reactivity of electrophilic phosphanediyl complexes with Wittig-ylides.
Area of Science:
- Organometallic Chemistry
- Phosphorus Chemistry
- Synthetic Chemistry
Background:
- Electrophilic terminal phosphanediyl complexes are reactive intermediates.
- Wittig-ylides with nitrile functional groups offer unique reaction sites.
Purpose of the Study:
- To synthesize the first 1,2,3,4-azatriphospholene complex.
- To investigate the reactivity of electrophilic terminal phosphanediyl complexes with functionalized Wittig-ylides.
Main Methods:
- Heating a P-phenyl-substituted 7-phosphanorbornadiene tungsten complex with triphenylphosphonio cyanomethylide.
- X-ray single-crystal diffraction for structural elucidation.
Main Results:
- Successful synthesis of the first 1,2,3,4-azatriphospholene complex.
- Formation of CH-insertion products as a competing reaction pathway.
- Demonstrated reactivity of phosphanediyl complexes at the ylide carbon and nitrile nitrogen.
Conclusions:
- The study reports the first synthesis of an azatriphospholene complex.
- Provides evidence for novel reactivity patterns of electrophilic phosphanediyl complexes with Wittig-ylides.