The Front Cover shows how sulfite, a waste product from scrubbing industrial flue gases, can be used by modified sulfite oxidases as an electron donor in the reduction of oxygen to hydrogen peroxide. In their Communication, M. M. C. H. van Schie et al. demonstrate how this peroxide, in turn, can function as a substrate for various peroxygenases, performing an array of interesting oxyfunctionalisation reactions. Sulfite, however, is also able to react directly with the peroxide intermediate product, steering the reaction away from the desired products. By shifting to a slurry to slurry approach by using the poorly soluble calcium sulfite as the electron donor, the performance of the system was greatly improved and we were able to perform the reactions at semi‐preparative scale. More information can be found in the Communication by M. M. C. H. van Schie et al..

中文翻译：

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前封面：亚硫酸氧化酶催化的H2O2原位生成驱动的选择性氧化官能化反应（ChemCatChem 12/2020）

封面 展示了亚硫酸盐，一种洗涤工业烟道气的废物，如何被修饰的亚硫酸盐氧化酶用作电子供体，将氧气还原为过氧化氢。在M. M. C. H. van Schie等人的通讯中。证明了这种过氧化物又如何充当各种过氧化酶的底物，进行了一系列有趣的氧化官能化反应。然而，亚硫酸盐还能够直接与过氧化物中间产物反应，使反应远离所需产物。通过使用难溶性亚硫酸钙作为电子给体，从一种浆液转移到另一种浆液方法，系统的性能得到了极大的改善，我们能够以半制备规模进行反应。可以在M.M.C.H.van Schie等人的通讯中找到更多信息。