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首页> 外文期刊>Bulletin of the Chemical Society of Japan >Syntheses and Properties of a New Type of Lewis Acids Incorporating Linked Bisphenoxide Moiety
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Syntheses and Properties of a New Type of Lewis Acids Incorporating Linked Bisphenoxide Moiety

机译:新型的结合双酚盐部分的路易斯酸的合成与性质

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摘要

Several ligands for a new type of Lewis acid, which incorporates two linked phenols, were synthesized and the reaction of these ligands with trimethylaluminum quantitatively gave Lewis acids. These Lewis acids were found to be an efficient promoter for the rearrangement of epoxides to carbonyl compounds as well as a useful protector of acetophenone against hydride-reduction. The VT-NMR spectrum and NOESY spectrum of a 1:1 complex of Lewis acid 2a (methyl [2,2'-(m-xylene-α,α'-diyl) bis (4,6-di-t-butylphenoxido) aluminum and acetophenone provided data on the structure of a complex of acetophenone and 2a.
机译:合成了新型路易斯酸的几种配体,其中包含两个连接的酚,这些配体与三甲基铝的反应定量给出了路易斯酸。发现这些路易斯酸是环氧化物重排成羰基化合物的有效促进剂,并且是苯乙酮抗氢化物还原的有用保护剂。路易斯酸2a(甲基[2,2'-(间二甲苯-α,α'-二基)双(4,6-二叔丁基苯氧基))1:1配合物的VT-NMR光谱和NOESY光谱铝和苯乙酮提供了苯乙酮和2a配合物的结构数据。

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