CsOH-promoted P-alkylation: a convenient and highly efficient synthesis of tertiary phosphines
作者:Matthew T Honaker、Benjamin J Sandefur、James L Hargett、Alicia L McDaniel、Ralph Nicholas Salvatore
DOI:10.1016/j.tetlet.2003.09.117
日期:2003.11
and efficient method for the synthesis of tertiary phosphines and ditertiaryphosphines has been developed. In the presence of cesium hydroxide, molecular sieves and DMF at room temperature, various secondary phosphines and alkyl bromides were examined, and the results have demonstrated that this methodology offers a general synthetic procedure to produce tertiary phosphines in moderate to high yields
Accessing Ambiphilic Phosphine Boronates through C−H Borylation by an Unforeseen Cationic Iridium Complex
作者:Shawn E. Wright、Stephanie Richardson‐Solorzano、Tiffany N. Stewart、Christopher D. Miller、Kelsey C. Morris、Christopher J. A. Daley、Timothy B. Clark
DOI:10.1002/anie.201812857
日期:2019.2.25
Ambiphilic molecules, which contain a Lewis base and Lewisacid, are of great interest based on their unique ability to activate small molecules. Phosphine boronates are one class of these substrates that have interesting catalytic activity. Direct access to these phosphine boronates is described through the iridium‐catalyzed C−H borylation of phosphines. An unconventional cationic iridium catalyst
Synthesis of 4-sulfonatobenzylphosphines and their application in aqueous-phase palladium-catalyzed cross-coupling
作者:Jane N. Moore、Nicholas M. Laskay、Kevin S. Duque、Steven P. Kelley、Robin D. Rogers、Kevin H. Shaughnessy
DOI:10.1016/j.jorganchem.2014.11.011
日期:2015.2
readily separated from organic products and potentially reused. The synthesis of two new water-soluble ligand precursors, di-tert-butyl(4-sulfonatobenzyl)phosphonium and di-1-adamantyl(4-sulfonatobenzyl)phosphonium, are reported. The air-stable, zwitterionic phosphonium salts were prepared by the reaction of dialkylphosphines with ethyl 4-bromomethylbenzenesulfonate, which results in a one-pot alkylation
ORGANIC MAGNESIUM PHOSPHIDE AND MANUFACTURING METHOD THEREOF, ORGANIC MAGNESIUM PHOSPHIDE COMPLEX AND MANUFACTURING METHOD THEREOF, AND MANUFACTURING METHOD OF ORGANIC PHOSPHORUS COMPOUND USING SAID PHOSPHIDE
申请人:HOKKO CHEMICAL INDUSTRY CO., LTD.
公开号:US20190248815A1
公开(公告)日:2019-08-15
An organic magnesium phosphide expressed by Formula (1) below and an organic magnesium phosphide complex expressed by Formula (9) below are provided, and a manufacturing method of organic phosphorus compound is characterized in that the above compounds used as a reagent is reacted with an electrophile:
wherein R
1
and R
2
are each independently an aliphatic group, heteroaliphatic group, alicyclic group, or heterocyclic group, and X is chlorine, bromine, or iodine,
wherein R
3
and R
4
are each independently an aliphatic group, heteroaliphatic group, aromatic group, alicyclic group, or heterocyclic group, and X and Y are each independently chlorine, bromine, or iodine.
This invention is directed to a class of compounds that can be both monodentate and bidentate in their association with a transition metal to form a catalyst for reactions such as the hydroformylation of olefins to produce aldehydes. The compounds contain two phosphorus atoms having different steric and/or electronic nature. In hydroformylation catalysts, the compounds advantageously can produce a variable n/iso product mixture of aldehyde products that can be varied by simply changing process variables such as [H
2
]/[CO] partial pressure gas ratio or temperature/inert gas partial pressure.