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<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '3924730', constants.ctx, '0')">lithium</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '111854', constants.ctx, '0')">THF-d8 (tetrahydrofuran-d8)</a> <br />&nbsp;under Ar, Li-sand is activated at the surface by intensive stirring and cooled to -78&deg;C, under Ar-countercurrent a soln. of (η-6-benzene)Cr(CO)3 is added (-78&deg;C, THF-d8), the suspension is stirred at -78&deg;C for 16 h; soln. is filtered from excess of lithium sand at -78&deg;C, without further purifn. NMR-spectroscopy;&nbsp;<br /> &nbsp;

&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '102391', constants.ctx, '0')">tetrahydrofuran</a> <br />&nbsp;under N2; LiC10H8 in THF added to vigorously stirred soln. of (C6H6)Cr(CO)3 in THF at -78 &deg;C; soln. kept at -78 &deg;C; not isolated; IR;&nbsp;<br /> &nbsp;