| abstract |
(57) [Problem] To introduce an alkyl group into a cyclopentadiene-based compound by a simple method with a high yield. SOLUTION: A cyclopentadiene compound is reacted with an equimolar amount or slightly smaller amount of alkyllithium with respect to the cyclopentadiene compound, and after adding a dipolar aprotic solvent to the reaction solution, RX (Wherein, R represents a hydrocarbon group having 1 to 15 carbon atoms, X is a tosyl group, a mesyl group or a halogen atom. ) By introducing an alkyl group into the cyclopentadiene compound. |