Xn:Harmful;28966-81-6Relevant articles and documents
(Dihalogenmethyl)palladium(II)-Komplexe aus Palladium(0)-Vorstufen des Dibenzylidenacetons: Synthese, Strukturchemie and Reaktivitaet
Herrmann, Wolfgang A.,Thiel, Werner R.,Brossmer, Christoph,Oefele, Karl,Priermeier, Thomas,Scherer, Wolfgang
, p. 51 - 60 (1993)
Bis(dibenzylideneacetone)palladium(0) (1) reacts with one equivalent of a chelating phosphine ligand (P-P) or two equivalents of a monophosphine ligand (P) to give complexes of the type (P-P)Pd(dba) (3a-c; dba=dibenzylidene acetone) and (P)2Pd(dba) (3d,e) respectively, that have been characterized spectroscopically and structurally (X-ray structure analysis).These complexes readily cleave the carbon-halogen bond of chloroform or bromoform.The air- and moisture-stable oxidative addition products (P-P)Pd(CHX2)X (4a-d; X=Cl, Br) are thus obtained in 70-85percent yield.Their identity was established by a single-crystal X-ray diffraction study of 4a.
Transformation of 1,3-imidazolidine-2-thione (SC3H6N2) into (SC3H4N2–O–N2C3H4S)2? dianion chelated in [Pd{κ 3–S, O, S–(SC3H
Mehra, Vinny,Bains, Amreen Kaur,Hundal, Geeta,Lobana, Tarlok S
, p. 359 - 363 (2017)
Reaction of [PdCl2(PPh3)2] with imidazolidine-2-thione {SC3H4(NH)2}in the presence of triethylamine involved activation of N–H bonds and formed an unusual oxo-bridged dianion, (SC3/su
Ryabov, Alexander D.,Sakodinskaya, Inna K.,Titov, Vladimir M.,Yatsimirsky, Anatoly K.
, p. L195 - L198 (1981)
Preparation and Properties of the ?-Picolyl Complexes of Palladium(II), (n=0,1, and 2)
Isobe, Kiyoshi,Nakamura, Yukio,Kawaguchi, Shinichi
, p. 1802 - 1808 (1989)
The oxidative addition of 2-(chloromethyl)pyridine to tetrakis(triphenylphosphine)palladium (0) in toluene at 100 deg C gave (1a), which was charachterized by analitical, molecular-weight, and IR data as well as 1H, 31P, and 13C
Tertiary arsine ligands for the Stille coupling reaction
Chishiro, Akane,Imoto, Hiroaki,Inaba, Ryoto,Konishi, Masafumi,Naka, Kensuke,Yumura, Takashi
, p. 95 - 103 (2021/12/27)
The Stille coupling reaction is one of the most important coupling reactions. It is well known that the triphenylarsine ligand can accelerate the reaction rate of Stille coupling. However, other arsine ligands have never been investigated for the Stille c
Structural, Kinetic, and Computational Characterization of the Elusive Arylpalladium(II)boronate Complexes in the Suzuki-Miyaura Reaction
Thomas, Andy A.,Wang, Hao,Zahrt, Andrew F.,Denmark, Scott E.
supporting information, p. 3805 - 3821 (2017/03/20)
The existence of the oft-invoked intermediates containing the crucial Pd-O-B subunit, the “missing link”, has been established in the Suzuki-Miyaura cross-coupling reaction. The use of low-temperature, rapid injection NMR spectroscopy (RI-NMR), kinetic studies, and computational analysis has enabled the generation, observation, and characterization of these highly elusive species. The ability to confirm the intermediacy of Pd-O-B-containing species provided the opportunity to clarify mechanistic aspects of the transfer of the organic moiety from boron to palladium in the key transmetalation step. Specifically, these studies establish the identity of two different intermediates containing Pd-O-B linkages, a tri-coordinate (6-B-3) boronic acid complex and a tetra-coordinate (8-B-4) boronate complex, both of which undergo transmetalation leading to the cross-coupling product. Two distinct mechanistic pathways have been elucidated for stoichiometric reactions of these complexes: (1) transmetalation via an unactivated 6-B-3 intermediate that dominates in the presence of an excess of ligand, and (2) transmetalation via an activated 8-B-4 intermediate that takes place with a deficiency of ligand.
