(η5-ethyltetramethylcyclopentadienyl)(η6-benzene)rhodium(III) hexafluorophosphate in nitromethane; acetone T=80°C; 24 h;

1: 57 percent / sodium ethoxide / ethanol / 16 h / Heating 2: 72 percent / lithium aluminium hydride / diethyl ether 3: 1.) (η5-ethyltetramethylcyclopentadienyl)(η6-benzene)rhodium(III) hexafluorophosphate / 1.) acetone, nitromethane, 80 deg C, 4 d, 2.) dimethyl sulphoxide, 1 h, heating View Scheme