Palladium-Catalyzed Desulfitative Cross-Coupling of Arylsulfonyl Hydrazides with Terminal Alkynes: A General Approach toward Functionalized Internal Alkynes
A palladium-catalyzed Sonogashira-type coupling between arylsulfonyl hydrazides and terminalalkynes via Ar(C)–S bond cleavage is disclosed, which enables the general synthesis of functionalized internalalkynes, especially the Br-substituted ones, in good to excellent yields under acid- and base-free conditions.
N-heterocyclic carbene adducts of cyclopalladated ferrocenylpyridine containing chloride or iodide anions: synthesis, crystal structures and application in the coupling of terminal alkynes with arylboronic acids
作者:Hong-Mei Li、Chen Xu、Lu-Meng Duan、Xin-Hua Lou、Zhi-Qiang Wang、Zhen Li、Yao-Ting Fan
DOI:10.1007/s11243-013-9695-7
日期:2013.4
N-heterocyclic carbene (NHC) adducts of cyclopalladated ferrocenylpyridine containing chloride or iodide anions 2–3 have been easily prepared from the bridge-splitting reaction of the palladacyclic dimer 1 and anion exchange reaction, respectively. They were characterized by elemental analysis, IR, 1H, and 13C NMR. Additionally, the structures of these complexes were determined by single-crystal X-ray
Controlling π–π Interactions through Coordination Bond Formation: Assembly of 1-D Chains of acac-Based Coordination Compounds
作者:Rafael León-Zárate、Jesús Valdés-Martínez
DOI:10.1021/acs.cgd.1c00083
日期:2021.7.7
are present. On the other hand, the supramolecular behavior of the coordination compounds is very homogeneous since, in all of the crystal networks, the intended 1-D chains are present. Given the polarization of the aromatic rings due to coordination, reflected in the calculated molecular electrostatic potential maps, we gain control over the π–π interaction geometry, promoting a head to tail interaction
Synthesis and Properties of Metal–Ligand Complexes with Endohedral Amine Functionality
作者:Amber M. Johnson、Orly Moshe、Ana S. Gamboa、Brian W. Langloss、John F. K. Limtiaco、Cynthia K. Larive、Richard J. Hooley
DOI:10.1021/ic201092s
日期:2011.10.3
A series of tetracationic M2L4 palladium-pyridyl complexes with endohedral amine functionality have been synthesized. The complexes were analyzed by NMR techniques (including Diffusion NMR and 2D NOESY), electrospray ionization (ESI) mass spectrometry, and X-ray crystallography. The solid state analysis shows a large change in crystal morphology upon introduction of the endohedral amine groups, caused by deleterious interactions between the amines and the triflate counterions from the coordination process. Combination of different ligands allows analysis of ligand exchange rates via NMR analysis, with half-lives on the order of 3 h, independent of the donor properties of the ligand. Self-sorting behavior is observed, with more electron-rich ligands being favored. The amine-containing and extended complexes are strongly fluorescent, giving quantum yields of up to 83%.