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An efficient method for the regioselective synthesis of pharmacologically relevant polysubstituted Δ2‐isoxazolines is based on the copper‐mediated direct transformation of simple terminal alkynes and alkenes. The overall process involves the formation of four chemical bonds with inexpensive and readily available copper nitrate trihydrate as a novel precursor of nitrile oxides. The reaction can be...
Kupfernitrat‐Trihydrat wird als neues Reagens zur Bildung von Nitriloxiden eingesetzt. In der Zuschrift auf S. 8919 ff. beschreiben B. Xu et al. eine effiziente Kupfernitrat‐vermittelte Kaskadenreaktion von einfachen Alkinen und Alkenen, die unter milden Bedingungen selektiv zu pharmakologisch wertvollen Δ2‐Isoxazolinen führt.
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