69774-36-3Relevant academic research and scientific papers
Expanding the scope of C-H amination through catalyst design
Espino, Christine G.,Fiori, Kristin Williams,Kim, Mihyong,Du Bois
, p. 15378 - 15379 (2004)
Analysis of the mechanism for Rh-mediated C-H amination has led to the development of a remarkably effective dinuclear Rh catalyst derived from 1,3-benzenedipropionic acid. This unique complex, Rh2(esp)2, is capable of promoting both
Cobalt complexes of the chelating dicarboxylate ligand esp : A paddlewheel-type dimer and a heptanuclear coordination cluster
Pakula, Ryan J.,Berry, John F.
, p. 13887 - 13893 (2018)
The coordination chemistry of Co(ii) with the chelating dicarboxylate ligand esp (esp = α,α,α′,α′-tetramethyl-1,3-benzenedipropionate) is explored. We report here the bimetallic paddlewheel-type dimer, Co2(esp)2(EtOH)2 (1), and a bowl-shaped, heptanuclear coordination cluster, Co7(OH)4(Hesp)2(esp)4(MeCN)2·4MeCN (2). Crystal structures of both complexes are reported as well as their magnetic properties, which indicate antiferromagnetic interactions among the Co(ii) ions.
Observation of a Photogenerated Rh2 Nitrenoid Intermediate in C-H Amination
Das, Anuvab,Maher, Andrew G.,Telser, Joshua,Powers, David C.
supporting information, p. 10412 - 10415 (2018/08/28)
Rh2-catalyzed C-H amination is a powerful method for nitrogenating organic molecules. While Rh2 nitrenoids are often invoked as reactive intermediates in these reactions, the exquisite reactivity and fleeting lifetime of these species has precluded their observation. Here, we report the photogeneration of a transient Rh2 nitrenoid that participates in C-H amination. The developed approach to Rh2 nitrenoids, based on photochemical cleavage of N-Cl bonds in N-chloroamido ligands, has enabled characterization of a reactive Rh2 nitrenoid by mass spectrometry and transient absorption spectroscopy. We anticipate that photogeneration of metal nitrenoids will contribute to the development of C-H amination catalysis by providing tools to directly study the structures of these critical intermediates.
Bimetallic reductive elimination from dinuclear Pd(III) complexes
Powers, David C.,Benitez, Diego,Tkatchouk, Ekaterina,Goddard, William A.,Ritter, Tobias
supporting information; experimental part, p. 14092 - 14103 (2011/01/09)
In 2009, we reported C-halogen reductive elimination reactions from dinuclear Pd(III) complexes and implicated dinuclear intermediates in Pd(OAc)2-catalyzed C-H oxidation chemistry. Herein, we report results of a thorough experimental and theor
Conformational analysis by the ring current method. The structure of 2,2,13,13-tetramethyl[4.4]metacyclophane
Fukazawa, Yoshimasa,Usui, Shuji,Tanimoto, Koji,Hirai, Yoshimasa
, p. 8169 - 8175 (2007/10/02)
The conformational analysis of 2,2,13,13-tetramethyl[4.4]metacyclophane (4) using X-ray crystallographic analysis, molecular mechanics calculations, and the ring current method is presented. Compound 4 shows a characteristic temperature-dependent chemical
Bis(aminoneopentyl) aromatics
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, (2008/06/13)
Aromatic-aliphatic diamines of the formula STR1 in which Ar is an arylene or substituted arylene are useful in preparing thermally stable, rigid, polyamides, polyureas and polyurethanes having a repeating unit of the formula STR2 in which Ar is arylene or substituted arylene, X is --NH-- or --O--, n is 0 or 1, and R is a divalent organic radical.
Bis(2-methyl-2-cyanopropyl) aromatics
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, (2008/06/13)
Aromatic-aliphatic dinitriles of the formula STR1 in which Ar is an arylene or substituted arylene are useful in the preparation of the corresponding amines which are intermediates for the preparation of thermally stable, rigid, polyamides.
