Sodium and potassium cyclopentadienide
were obtained in an improved synthetic procedure. They
were prepared in a one-pot synthesis directly by reaction
of alkali metals with neat dicyclopentadiene at elevated
temperature. The products precipitated as white powders
and were isolated by filtration. The excess of dicyclopentadiene can be recycled. The new reaction procedure
provides a much more convenient access to the products,
no dry solvents such as THF or decahydronaphthalene
are needed, and no colored impurities are observed.
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