1: 73 percent / <CoCp2> / 1 h / 145 °C 2: 73 percent / diethyl ether / 6 h / Ambient temperature 3: 69 percent / m-chlorperbenzoesaeure / CH2Cl2 / 4 h / Ambient temperature 4: 1.) Ac2O; 2.) 2N HCl / 1.) Et3N, reflux, 2 h; 2.) water, reflux, 75 min View Scheme

[Co(η5-C5H5)2] T=145°C; 1 h;

η5-cyclopentadienyl dicarbonyl cobalt in m-xylene 36 h; HeatingIrradiation;

<b>With</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1209238', constants.ctx, '0')">aluminium trichloride</a>&nbsp;<b>in</b>&nbsp; <a href="#" onclick="return RXDsubstances(event, this, '1098293', constants.ctx, '0')">carbon disulfide</a> <br /> <br /> &nbsp;

&nbsp;(i) AlCl₃, (ii) aq. MeOH;&nbsp;&nbsp;Multistep reaction;&nbsp;<br /> &nbsp;