Syntheses and Properties of a New Type of Lewis Acids Incorporating Linked Bisphenoxide Moiety
作者:Yoshihiro Ohba、Kazuaki Ito、Hiroyuki Maeda、Hiroaki Ebara、Shin Takaki、Tomomi Nagasawa
DOI:10.1246/bcsj.71.2393
日期:1998.10
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.
合成了一种新型路易斯酸的几种配体,它结合了两个连接的酚,这些配体与三甲基铝的反应定量地得到了路易斯酸。发现这些路易斯酸是环氧化物重排为羰基化合物的有效促进剂,也是苯乙酮防止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 络合物的 VT-NMR 谱和 NOESY 谱铝和苯乙酮提供了苯乙酮和 2a 复合物结构的数据。