Catalytic access to ferrocenyl phosphines bearing both planar and central chirality – A kinetic resolution approach via catalytic asymmetric P(III)–C bond formation
作者:Abdul Sadeer、Tadayuki Kojima、Jia Sheng Ng、Kennard Gan、Renta Jonathan Chew、Yongxin Li、Sumod A. Pullarkat
DOI:10.1016/j.tet.2020.131259
日期:2020.6
A series of enantioenriched ferrocenyl monophosphines imbued with both central and planarchirality were obtained catalytically (80–99% ee) via the kinetic resolution of 1,2-disubstituted planarchiral ferrocenyl enone racemates. The synthetic approach utilized a chiral palladacycle to facilitate the asymmetric hydrophosphination (AHP) as a means to achieve high stereoselectivity. The enantioenriched
[2-(Dimethylaminomethyl)ferrocenyl]lithium reacts with (η5-C5H5)2MCl2 and (η5-C5Me5)2TiCl2 to give (η5-C5H5)2M(FcN)2 and (η5-C5Me5)2Ti(FcN)Cl (M Ti, Zr, Hf; FcN 2-(dimethylaminomethyl)ferrocenyl). The compounds were identified from their 1H and 13C NMR, IR, and mass spectra and by elemental analysis.
[2-(二甲基氨基甲基)二茂铁基]锂反应用(η 5 -C 5 H ^ 5)2的MC1 2和(η 5 -C 5我5)2的TiCl 2,得到(η 5 -C 5 H ^ 5)2 M( FCN)2和(η 5 -C 5我5)2的Ti(FCN)氯(M钛,锆,铪; FCN2-(二甲基氨基甲基)二茂铁)。从其1 H和13中鉴定出这些化合物13 C NMR,IR和质谱,以及元素分析。
Aminoalkylferrocenyldichlorophosphanes: facile synthesis of versatile chiral starting materials
A series of racemic and optically pure aminoalkylferrocenyldichlorophosphanes has been prepared by reaction of phosphorus trichloride with the corresponding lithiated aminoalkylferrocene precursors. Crystal structures of racemic 1-dichlorophosphanyl-2-N,N-dimethylaminomethylferrocene, racemic 1-dichlorophosphanyl-2-N,N-dimethylaminomethyl-3-triphenylsilylferrocene and (S)-N,N-dimethyl-1-[(R)-2-(di
Redox-switched molecular aggregates: the first example of vesicle formation from hydrophobic ferrocene derivatives
作者:Julio C. Medina、Isabelle Gay、Zhihong Chen、Luis Echegoyen、George W. Gokel
DOI:10.1021/ja00001a056
日期:1991.1
We report here a novel class of ferrocenyl steroids and present the first evidence for aggregation of these systems and particularly for vesicleformation controlled by redox-switchedferrocene amphiphiles
The action of Me2NHAlCl3 on acylferrocenes is a convenient route to ferrocenylimmonium ions FcC(R)Me2. Derivatives with R = H(I), Ph(II), 2-(CH3)2 (III) have been prepared. We examined some properties of the salts: NMR, action of diazomethane and reduction with potassium borohydride. This reduction is illustrated by the synthesis of the endo amine (IV).
Me 2 NH 3 AlCl 3对酰基二茂铁的作用是获得二茂铁基铵离子FcC(R)3 Me 2的便捷途径。制备了具有R = H(I),Ph(II),2-(CH 3)2(III)的衍生物。我们检查了盐的某些性质:NMR,重氮甲烷的作用以及硼氢化钾的还原作用。内胺(IV)的合成说明了这种还原。