The synthesis of cyclopentadienyl bis-phosphine ruthenium thiolato complexes of the type [RuCp(dppm)SR] from [RuCp(PPh3)2 Cl] using conventional heating and microwave irradiation using a focused monomode reactor is described and the protocols compared. A considerable decrease of the reaction time is observed under microwave conditions. Yields by both methods are comparable. Functionalities such as esters, carboxylic acids and amides on the thiolato ligands are tolerated under the reaction conditions.
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