Reaction of Tri(2-pyridyl)phosphine with Electron-Deficient Alkynes in Water: Stereoselective Synthesis of Functionalized Pyridylvinylphosphine Oxides
作者:Svetlana N. Arbuzova、Nina K. Gusarova、Tatyana E. Glotova、Igor A. Ushakov、Svetlana I. Verkhoturova、Anastasiya O. Korocheva、Boris A. Trofimov
DOI:10.1002/ejoc.201301453
日期:2014.1
The reaction of tri(2-pyridyl)phosphine with electron-deficient alkynes in water proceeds under mild conditions (40–45 °C, without catalyst, 4–5 h) with liberation of pyridine to give (E)-pyridylvinylphosphine oxides in 45–56 % yields, the only exception being the reaction with cyanophenylacetylene, which affords the corresponding vinylphosphine oxide of Z-configuration in 40 % yield. The reaction is
2-Pyridyl-phosphine and -diphosphine complexes of nickel(0), their reactivity (including aqueous solution chemistry), and some related, incidental methylphosphonium iodides
作者:Matthew D. Le Page、Brian O. Patrick、Steven J. Rettig、Brian R. James
DOI:10.1016/j.ica.2015.04.003
日期:2015.5
Ni(CO)2[2H-d(py)pcp]}2+ being isolated as the bis(triflate) salt; the dication decomposes in minutes with formation of [Ni(H2O)6]2+, CO, the phosphine dioxide, and deprotonated d(py)pcp. Some twenty-two Ni0 complexes, exemplified by Ni(P–P)2, Ni(PNx)2(P–P), Ni(PNx)4, and related PPh3- and Ph2P(CH2)2PPh2 (dppe)-containing species, are synthesized from Ni(1,5-COD)2 and their reactivity studied; for
Structures and spectra of bis-tripodal iron(II) chelates, [FeL2]2+, where L = tris(pyrazol-1-yl)methane, tris(pyridin-2-yl)methane, bis(pyrazol-1-yl)(pyridin-2-yl)methane and tris(pyridin-2-yl)phosphine oxide. Magnetism and spin crossover in the (pz)3CH case
作者:Peter A. Anderson、Timothy Astley、Michael A. Hitchman、F. Richard Keene、Boujemaa Moubaraki、Keith S. Murray、Brian W. Skelton、Edward R. T. Tiekink、Hans Toftlund、Allan H. White
DOI:10.1039/b003299i
日期:——
range of six-co-ordinate bis-tripodal iron(II) chelates, [FeL2]2+, has been synthesized from iron-(II) or -(III) precursors where L = tris(pyrazol-1-yl)methane (pz)3CH, tris(pyridyl-2-yl)methane (py)3CH, bis(pyrazol-1-yl)(pyridin-2-yl)methane (pz)2(py)CH and tris(pyridin-2-yl)phosphine oxide (py)3PO. Crystalstructures have been determined for three compounds and in the (pz)3CH case for two polymorphs
Expedient one-pot organometallics-free synthesis of tris(2-pyridyl)phosphine from 2-bromopyridine and elemental phosphorus
作者:Boris A. Trofimov、Alexander V. Artem’ev、Svetlana F. Malysheva、Nina K. Gusarova、Nataliya A. Belogorlova、Anastasiya O. Korocheva、Yuriy V. Gatilov、Victor I. Mamatyuk
DOI:10.1016/j.tetlet.2012.03.004
日期:2012.5
reacts with elemental phosphorus (red or white) in a superbasic KOH/DMSO(H2O) suspension at 100 °C (for red phosphorus) and 75 °C (for white phosphorus) over 3 h to afford tris(2-pyridyl)phosphine in a 62% yield (from red phosphorus) and a 50% yield (from white phosphorus). Under microwave assistance, the reaction with red phosphorus takes just 20 min to produce tris(2-pyridyl)phosphine in 53% yield. A hitherto
A new class of luminescent Cu(<scp>i</scp>) complexes with tripodal ligands – TADF emitters for the yellow to red color range
作者:Timo Gneuß、Markus J. Leitl、Lars H. Finger、Nicholas Rau、Hartmut Yersin、Jörg Sundermeyer
DOI:10.1039/c4dt02631d
日期:——
A new class of emissive and neutral Cu(i) compounds with tripodal ligands is presented. The complexes were characterized chemically, computationally, and photophysically.