n-butyllithium in diethyl ether; hexane; toluene T=-78 - 20°C; 8.08333 h; Inert atmosphereSchlenk technique;

in diethyl ether; toluene Ar atmosphere; to suspn. of CpZrCl3DME in 3:1 toluene-diethyl ether at -78 °C diethyl ether soln. of LiC9H7 was added, stirred and allowed to warm to room temp. over 8 h; solvent removed under reduced pressure, residue extd. with CH2Cl2, suspn. cooled to -10 °C for 1 h, filtered, filtrate concd., pentane added, cooled to -18 °C for 12 h, filtered, filtrate concd., pentane added; elem. anal.;

in tetrahydrofuran equimolar amts. of the educts in THF were stirred for 1 h, then refluxed for 3 h;; after filtration, petroleum ether (60-80 °C) was added to the soln., the crystals were filtered off, washed with petroleum ether, and recrystd. from acetone by addn. of hexane; elem. anal.;;