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Cycloaddition Reactions of an Active Cyclic Phosphane/Borane Pair with Alkenes, Alkynes, and Carbon Dioxide

2019; Wiley; Volume: 26; Issue: 6 Linguagem: Inglês

10.1002/chem.201905171

1521-3765

Xiaoming Jie, Qiu Sun, Constantin G. Daniliuc, Robert Knitsch, Michael Ryan Hansen, Hellmut Eckert, Gerald Kehr, Gerhard Erker,

Synthesis and characterization of novel inorganic/organometallic compounds

The active six-membered cyclo-FLP 6 undergoes a rapid P/B addition reaction to carbon dioxide. At elevated temperature, the resulting heterobicyclo[2.2.2]octane derived product 7 undergoes ring opening and equilibrates with the cyclotetramer (7)4 . In the large macrocyclic structure, four monomeric six-membered cyclo-FLP units are connected by four CO2 molecules to form the supramolecular ring system. The P/B cyclo-FLP 6 undergoes a variety of additional cycloaddition reactions.