Abstract
AbstractCopper is one of the most abundant metals on the Earth. Elemental copper, as well as its alloys and compounds are widely used as catalysts in organic chemistry. By utilizing naturally occurring ores, the non‐eco‐friendly copper smelting process can be bypassed, leading to green and environmentally friendly procedures in comparison to the use of synthetic copper compounds. In this study we wish to present a more economical method for the production of symmetric diynes starting from various terminal acetylenes in a Glaser–Hay reaction. Out of the seven tested naturally occurring copper‐containing minerals, chalcocite (Cu2S) and bornite (Cu5FeS4) were the best applicable ones. These minerals were able to produce diynes in yields comparable to those obtained with their synthetic analogues, furthermore they proved to be partly reusable.
Published Version
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