General and Stereoselective Method for the Synthesis of Sterically Congested and Structurally Diverse <i>P</i>-Stereogenic Secondary Phosphine Oxides
作者:Zhengxu S. Han、Hao Wu、Yibo Xu、Yongda Zhang、Bo Qu、Zhibin Li、Donald R. Caldwell、Keith R. Fandrick、Li Zhang、Frank Roschangar、Jinhua J. Song、Chris H. Senanayake
DOI:10.1021/acs.orglett.7b00568
日期:2017.4.7
A general and efficient method for the synthesis of bulky and structurally diverse P-stereogenic chiral secondary phosphine oxides (SPOs) by using readily available chiral amino alcohol templates is described. These chiral SPOs could be used as chiral building blocks for the synthesis of difficult-to-access bulky P-stereogenic phosphine compounds or ligands for organic catalysis.
The invention relates to a process for synthesizing tertiary phosphines by reacting halophosphines with organomagnesium compounds in the presence of copper compounds and optionally of salts.
Die Erfindung betrifft ein Verfahren zur Synthese tertiärer Phosphane durch Umsetzung von Halogenphosphanen mit Organomagnesium-Verbindungen in Gegenwart von Kupferverbindungen und gegebenenfalls von Salzen.
本发明涉及一种通过卤素膦与有机镁化合物在铜化合物和任选盐存在下反应合成叔膦的工艺。
Structure–Property Studies of Bichromophoric, PAH-Functionalized Dithieno[3,2-<i>b</i>:2′,3′-<i>d</i>]phospholes
作者:Chris Jansen Chua、Yi Ren、Thomas Baumgartner
DOI:10.1021/om3000407
日期:2012.3.26
A series of dithienophospholes featuring polyaromatic hydrocarbon (PAR) substituents, with increasing number of fused rings ranging from 2 to 4 at the phosphorus center, have been synthesized and characterized. The installation of a large pi-system in the vicinity of the dithienophosphole scaffold was found to induce unusual photophysics for this system that are based on the creation of two neighboring chromophores within the same molecular scaffold. Extensive photophysical studies revealed that significant energy transfer (ET) occurs from the PAH unit, which acts as a donor, to the dithienophosphole acceptor, showing ET efficiencies of almost 90%. TD-DFT calculations confirm the possibility for the two subunits to communicate with each other. Furthermore, due to the presence of the out-of-plane dithienophosphole unit, the PAR species do not show any significant tendency to form aggregates, such as excimers/exciplexes, even in colloidal suspensions.