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C_1-Symmetric aminosulfoximines in copper-catalyzed asymmetric vinylogous mukaiyama aldol reactions

机译:铜催化的不对称乙烯类mukaiyama aldol反应中的C_1-对称氨基亚砜亚胺

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摘要

Vinylogous Mukaiyama-type aldol reactions have been catalyzed by a combination of Cu(OTf)_2 and readily available C_1-symmetric aminosulfoximines. After a fine-tuning of the reaction conditions and an optimization of the modularly assembled ligand structure, high stereoselectivities and excellent yields have been achieved in catalyzed reactions involving various electrophileucleophile combinations. The relative and absolute configurations of two products were assigned by X-ray single crystal structure analysis and a comparison of calculated and experimental CD spectra.
机译:Cu(OTf)_2和现成的C_1-对称氨基亚砜肟类化合物的组合已催化了酒类Mukaiyama型醛醇缩醛反应。在对反应条件进行了微调并优化了模块化组装的配体结构之后,在涉及各种亲电试剂/亲核试剂组合的催化反应中,实现了高立体选择性和优异的收率。通过X射线单晶结构分析以及计算和实验CD光谱的比较,确定了两种产品的相对和绝对构型。

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