Harnessing the catalytic activity of copper and vanadium ores by mechanochemistry Francesco Puccetti 1 , Christian Schumacher, 1 Hermann Wotruba 2 , José G. Hernández 3, * and Carsten Bolm 1, * 1 Institute of Organic Chemistry, RWTH Aachen University, Germany, 2 Mineral Processing Unit (AMR), RWTH Aachen University, Germany, 3 Grupo Ciencia de los Materiales, Instituto de Química, Universidad de Antioquia, Colombia *e-mail:joseg.hernandez@udea.edu.co,carsten.bolm@oc.rwth-aachen.de. The use of well-defined metallic species as catalysts is a widespread approach in organic synthetic protocols. This practice imposes the need for specialized mineral extractives technology and refining processes, both involving a significant energy expenditure and the production of chemical waste with no economic value, but high environmental impact. 1 In this scenario, the possibility of bypassing the progressive purification steps by directly using the raw mineral in synthetic processes is undoubtedly an appealing idea. Herein, we report the successful application of mechanochemical techniques to harness the catalytic activity of bulk, readily available, copper and vanadium mineral ores, avoiding the need for the processing protocols. Two different mechanochemical carbon–carbon bond formation approaches are presented, by atom transfer radical cyclisation (ATRC) reaction and oxidative coupling. In both cases, several examples have been reported to reinforce the idea of direct use of minerals in catalysis. 2
References 1. Bian, Z., Miao, X., Lei, S., Chen, S. E., Wang, W., Struthers, S. Science 2012 , 337 , 702–703. 2. Puccetti, F., Schumacher, C., Wotruba, H., Hernández, J. G., Bolm C., ACS Sustainable Chem. Eng. 2020 , 8 , 7262–7266.
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