Manganese Salan Complexes as Catalysts for Hydrosilylation of Aldehydes and Ketones
Manganese Salan Complexes as Catalysts for Hydrosilylation of Aldehydes and Ketones
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DOI：
10.3390/catal13040665
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发表时间：
2023-03
期刊：
影响因子：
3.9
通讯作者：
Nora Almutairi;Srikanth Vijjamarri;G. Du
中科院分区：
文献类型：
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作者：
Nora Almutairi;Srikanth Vijjamarri;G. Du
锰因其丰富、低毒性和催化用途广泛而引起了人们的广泛关注。在本研究中，合成并表征了一系列由salan配体负载的锰（III）配合物，并考察了它们在羰基化合物硅氢化反应中的催化活性。氯化锰配合物在没有高氯酸银活化的情况下表现出最低的催化效果，叠氮化锰配合物在羰基化合物的硅氢化反应中表现出良好的活性。在优化后的反应条件下，几种类型的醛类和酮类化合物均能得到较好的还原，且对多种官能团具有良好的耐受性。结合实验结果，讨论了硅烷活化和硅氢化反应的可能机理。
Manganese has attracted significant recent attention due to its abundance, low toxicity, and versatility in catalysis. In the present study, a series of manganese (III) complexes supported by salan ligands have been synthesized and characterized, and their activity as catalysts in the hydrosilylation of carbonyl compounds was examined. While manganese (III) chloride complexes exhibited minimal catalytic efficacy without activation of silver perchlorate, manganese (III) azide complexes showed good activity in the hydrosilylation of carbonyl compounds. Under optimized reaction conditions, several types of aldehydes and ketones could be reduced with good yields and tolerance to a variety of functional groups. The possible mechanisms of silane activation and hydrosilylation were discussed in light of relevant experimental observations.