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Potassium naphthalene was prepared by adding 3.76 g (96 mmol) of potassium into 300 ml of ice-cold THF in which 11.54 g (90 mmol) of naphthalene was added. After 24 h, unreacted potassium in the solution was removed.

http://www.rsc.org/delivery/_Art ... 500266d&Iss=3-4

http://atlas.cc.itu.edu.tr/~yusuf/papers/276.pdf
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