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Polymerisation von fulvenen, 4. Anionische polymerisation von 6,6-dimethylfulven by Kronig, Peter ;Slongo, Mario ;Neuenschwander, Markus is a Chemistry article available to read on EtoBox.

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## Abstract The reaction of 6,6‐dimethylfulvene (**1**) with small amounts of sodium cyclopentadienide (Na‐CPD) gives a mixture of oligomeric products, from which 1‐cyclopentadienyl‐1,3,3,‐trimethyltetrahydropentalene (**7**) was isolated with 67% yield. The structure of the main product **7** was proved by combination of spectrosopic methods as well as by NMR spectroscopy of its dianion. A reasonable reaction mechanism is presented and supported by isolation of other dimers **9** and **12** and trimers **10** as well as of side products **11** and **13**. The product distribution is severely influenced by increasing the amount of Na‐CPD (favouring oligomers of type **11** and **13**) as well as by addition of crown ether.

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Author

Kronig, Peter ;Slongo, Mario ;Neuenschwander, Markus

Publisher

Wiley (John Wiley & Sons); Wiley (ISSN 0025-116X)

Published

1982

Language

DE

Field

Chemistry (Physical Sciences)