Results 141 to 150 of about 1,519 (209)

Cyclometallation&—III. Regioselectivity in Pd(II) Cyclometallated complexes

Polyhedron, 1987
Abstract Cyclometallated complexes derived from organic ligands where two initial metallation sites are present have been synthesized. The preferred palladation position is discussed on the basis of electronic and steric effects, and the regioselectivity of the cyclometallation is characterized by means of IR and 1 H NMR spectroscopy.
J.M. Vila, A. Suarez, M.T. Pereira, E. Gayoso, M. Gayoso   +4 more
openaire   +1 more source

Cyclometallation of ferrocenylimines III. Regioselectivity in Hg(II) cyclometallated complexes

Journal of Organometallic Chemistry, 1997
Abstract The synthesis and mercuration of a series of Schiff bases 1′-benzoyl-1-[(arylimino)phenylmethyl]ferrocene (aryl: a variety of substituted phenyls) have been studied. In all cases the mercuration occurred at the 2-position of the ferrocene ring. Oxygen → mercury coordinated products were not obtained.
Yang Jie Wu, Xiu Ling Cui, Yuan Hong Liu, Han Zhen Yuan, Xi An Mao   +4 more
openaire   +1 more source

Cyclometallated compounds XII. Syntheses of two new doubly-cyclometallated compounds

Inorganic Chemistry Communications, 1998
Abstract Two isomeric ligands, 2,2′-diphenyl-4,4′-bipyridine (4) and 3,3′-di(2-pyridyl)biphenyl (5), have been synthesised from 2-phenylpyridine and 3-bromoaniline, respectively, by procedures involving nickel(0)-catalysed homocoupling reactions. Both of these new ligands readily undergo double cyclopalladation reactions and have been converted to ...
Duncan J. de Geest, Peter J. Steel
openaire   +1 more source

Catalytic cyclometallation in steroid chemistry V: Synthesis of hybrid molecules based on steroid oximes and (5Z,9Z)‐tetradeca‐5,9‐dienedioic acid as potential anticancer agents

Steroids, 2018
Graphical abstract Figure. No Caption available. HighlightsSynthesis of steroid containing 5Z,9Z‐dienoic acids have been developed.New molecules are efficient apoptosis inducers in cancer cells.The structures of all novel compounds were confirmed by NMR ...
V. D'Yakonov, R. A. Tuktarova, L. Dzhemileva, Svetlana R. Ishmukhametova, M. Yunusbaeva, U. Dzhemilev   +5 more
semanticscholar   +1 more source

Regioselective cyclometallation of N-methyl-N-(naphthalen-2-ylmethyl)-2-(pyridin-2-yl)ethanamine with palladium(II) acetate and catalytic reduction of various functional groups

Inorganica Chimica Acta, 2019
The preparation of novel unsymmetrical, tridentate ligand, N-methyl-N-(naphthalen-2-ylmethyl)-2-(pyridin-2-yl) ethanamine (1), has been described.
Puspendra Singh, Gulam Shabbani, Amravati S. Singh, H. C. Bajaj, E. Suresh   +4 more
semanticscholar   +1 more source

Pd-catalyzed ortho-/meta-C-H-annulation of biphenyl amines with enynes through non-rollover cyclometallation.

Organic and biomolecular chemistry
Annulations through dual C-H activation represent a powerful tool to selectively assemble multi-cyclic scaffolds. We present herein a palladium-catalyzed ortho-/meta-C-H-annulation of biphenyl amines with 1,6-enynes.
Undamatla Suri Babu, Muniganti Naveen Kumar, S. Mahesh, J. Nanubolu, Maddi Sridhar Reddy   +4 more
semanticscholar   +1 more source

Catalytic cyclometallation in steroid chemistry VI: Targeted synthesis of hybrid molecules based on steroids and tetradeca‐5Z,9Z‐diene‐1,14‐dicarboxylic acid and study of their antitumor activity

Steroids, 2018
Graphical abstract Figure. No Caption available. HighlightsSynthesis of steroid containing 5Z,9Z‐dienoic acids have been developed.New molecules are efficient apoptosis inducers in cancer cells.The structures of all novel compounds were confirmed by NMR ...
V. D'Yakonov, R. A. Tuktarova, L. Dzhemileva, Svetlana R. Ishmukhametova, M. Yunusbaeva, U. Dzhemilev   +5 more
semanticscholar   +1 more source

Sequential H/D Exchanges Resulting from Rollover-Cyclometallation during Photoirradiation of Rhodium(III) Complex in Methanol-d4.

Chemistry
We present the photoreaction of newly prepared bis(6,6'-dimethyl-2,2'-bipyridine)(oxalato)rhodium(III) ([Rh(N^N)2(ox)]+) in CD3OD. Photoirradiation of this complex causes the dissociation of ox, followed by the formation of the unprecedented Rh(III ...
Shota Tanaka, Shingo Hattori, K. Shinozaki   +2 more
semanticscholar   +1 more source

Photorefractive Cyclometalated Complexes

ChemInform, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
R. Termine, M. Talarico, I. Aiello, D. Dattilo, D. Pucci, M. Ghedini, A. Golemme   +6 more
openaire   +2 more sources

Cyclometallation reactions of a three-coordinate cobalt(i) complex bearing a nonsymmetric N-heterocyclic carbene ligand.

Dalton Transactions, 2019
The reactions of a three-coordinate cobalt(i) complex [(IAdMes)(PPh3)CoCl] (1) (IAdMes = 1-mesityl-3-adamantyl-4,5-dimethylimidazol-2-ylidene) with LiCH3, LiCH2SiMe3 and NaCp gave ligand-based C(sp3)-H bond activation products [(IAd'Mes)Co(η6-C6H5PPh2)] (
Ya-Fei Gao, Qi Chen, Xue-Bing Leng, L. Deng   +3 more
semanticscholar   +1 more source