A simple cyclopalladated complex of 4-(2-thiazolylazo)resorcinol showed a specific red-to-green colour change upon addition of organotin species in the acetonitrile-water medium.

Bowl-shaped corannulene provides various metal binding modes with its curved π-surfaces and rim. Herein, we report the syntheses of 2-pyridylcorannulene and its cyclopalladated complex. Its expanded π-system and columnar self-assembly in the crystal state were revealed by NMR and UV-vis spectroscopies, ESI-TOF mass spectrometry and single-crystal X-ray analysis.

The aminomethyl cyclopalladated complex is identified as a key intermediate for promoting the C–N bond activation of tertiary amines via reductive elimination and oxidative addition sequence. This strategy has enabled palladium-catalyzed ring-closing reaction enynols with aminals methylene transfer activation, which provides rapid access to densely functionalized O-heterocycle containing alleni...

Treatment of [PdCl2(PhCN)2] with diaryl telluride in 1 : 2 molar ratio gave mononuclear palladium complexes, trans-[PdCl2(TeR2)2] () (R = Mes () (Mes = 2,4,6-trimethylphenyl), Ph (), o-tol () (o-tol = ortho-tolyl)). Reaction of [PdCl2(TeMes2)2] with one equivalent of [PdCl2(PhCN)2] or Na2PdCl4 with TeRR' afforded chloro-bridged binuclear complexes, [Pd2(μ-Cl)2Cl2(TeRR')2] () (R/R' = Mes/Mes ();...

The lH,13C, and lg3W NMR characteristics for a series of dinuclear complexes containing a W-(p-CR1R2)-Pd moiety are reported. These compounds, derived from the reaction of the carbyne complex (Cp)(C0)2M(=CR), M = Mo, W, R = cyclopentenyl or p-tolyl, with a dinuclear cyclopalladated complex are shown to possess an y2-bond from the cyclopentenyl or p-tolyl fragment to the metal, thus attaining an...

Two series of ferrocenyl- and aryl-derived cyclopalladated organosilane thiosemicarbazone complexes were synthesised via C-H bond activation. Selected compounds were evaluated for in vitro antiplasmodial activity against the chloroquine-sensitive (NF54) and chloroquine-resistant (Dd2) strains of the human malaria parasite Plasmodium falciparum. Cyclopalladation of the thiosemicarbazones resulte...

Two new NHC adducts of cyclopalladated ferrocenylpyrazine complexes 1-2 have been prepared and characterized. An efficient NHC-modulated Pd/Cu cocatalyzed three-component coupling reaction for the synthesis of 2,6-diarylquinolines from aminobenzyl alcohols, aryl ketones, and arylboronic acids in air is described. The reaction involves oxidation, cyclization and Suzuki reactions. The luminescenc...

Orthopalladation of the phenyl ring in the cyclopalladated complex [Pd{C,N-pyl-SCHC(O)Ph}(μ-X)]2 (pyl = 2-pyridyl, X = Cl; 1·Cl) occurs upon reacting it with AgOAc (1 : 2) in MeCN to give the pincer complex [Pd{C,C,N-pyl-SCHC(O)C6H4-2}(NCMe)] (2). The nature of the base and X plays a key role because palladation neither occurs with other bases nor when AgOAc is the base and X is Br, in which ca...