Tricyclic Phosphorus-Carbon Compounds – Synthesis by Oligomerization of Kinetically Stabilized Phosphaalkynes
✍ Scribed by Andreas Hoffmann; Andreas Mack; Richard Goddard; Paul Binger; Manfred Regitz
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 207 KB
- Volume
- 1998
- Category
- Article
- ISSN
- 1434-1948
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✦ Synopsis
When trialkylaluminum reagents 2 bearing sterically complexes (Ǟ 6a,b), as illustrated by the reactions of 5a with nonacarbonyldiiron or the pentacarbonyltungsten tetra-demanding substituents are allowed to react with phosphaalkynes 1 a highly selective phosphaalkyne hydrofuran complex. When triethylgallium ( ) is allowed to react with phosphaalkynes 1, tricyclic phosphorus-carbon-cyclotrimerization with incorporation of one organometal unit occurs (Ǟ 5a-d). The resulting triphosphaalatricyclo-gallium compounds are generated (Ǟ 8a,b). heptenes 5 are able to function as ligands in transition metal