Knoevenagel Condensation of Phosphinoylacetic Acids with Aldehydes: An Efficient One-Pot Strategy for the Synthesis of P-Functionalized Alkenyl Compounds
phosphinoylacetic acids derived from P(O)–H compounds were used as the starting materials in the reaction, providing a highly stereoselective and efficient method for constructing α,β-unsaturated phosphine oxides. Moreover, this simple and practical procedure provides an alternative and more environmentally friendly synthesis strategy for this type of P-functionalized alkenyl compounds.
Copper-Catalyzed C-P Coupling through Decarboxylation
作者:Jie Hu、Ning Zhao、Bin Yang、Ge Wang、Li-Na Guo、Yong-Min Liang、Shang-Dong Yang
DOI:10.1002/chem.201003561
日期:2011.5.9
developed by copper‐catalyzed decarboxylative coupling of alkenyl, alkynyl carboxylic acids, and N‐benzylproline, respectively, with R2P(O)H (see scheme). All classes of products are important precursors for preparation of biologically active molecules and various phosphorus ligands. This finding represents the first example of copper‐catalyzed decarboxylative coupling to construct CP bonds.
cobaloxime viz., both as the visible light absorber to activate the P(O)-H bond, as well as a hydrogen transfer agent to influence the reaction pathway. This synergetic feature of the cobaloxime catalyst preforming multiple functions under ambient condition provides a convergent synthetic approach to vinylphosphine oxides directly from H-phosphine oxides and alkenes (or alkynes).
Stereoselective Synthesis of Alkenyl Silanes, Sulfones, Phosphine Oxides, and Nitroolefins by Radical C–S Bond Cleavage of Arylalkenyl Sulfides
作者:Ya-mei Lin、Guo-ping Lu、Rong-kang Wang、Wen-bin Yi
DOI:10.1021/acs.orglett.7b00126
日期:2017.3.3
has been introduced for the C–S bond activation of arylalkenyl sulfides. The protocol provides an efficient approach for the generation of various alkenes including alkenyl silanes, sulfones, phosphineoxides, and nitroolefins. In most cases, these radical substitutions are performed under metal-free conditions with stereospecificity.
Diphosphino-Functionalized MCM-41-Immobilized Rhodium Complex: A Highly Efficient and Recyclable Catalyst for the Hydrophosphinylation of Terminal Alkynes
作者:Fang Yao、Jian Peng、Wenyan Hao、Mingzhong Cai
DOI:10.1007/s10562-012-0781-9
日期:2012.6
this heterogeneous rhodium complex is a highlyefficient catalyst for the hydrophosphinylation of terminalalkynes with diphenylphosphine oxide and can be recovered and recycled by a simple filtration of the reaction solution and used for at least 10 consecutive trials without any decreases in activity.Graphical AbstractHydrophosphinylation of terminalalkynes using diphosphino-functionalized MCM-41-immobilized