2018
DOI: 10.1002/slct.201703079
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Abstract: Rollover palladacycles complexes containing pyridinebenzothiazole fragments were synthetized via remote C−H bond activation by PdCl2 in DMF. The structures of these compounds were proposed based on NMR analysis and high‐resolution mass spectrometry; in selected case of compound 1, its molecular structure was corroborated by single crystal X‐ray diffraction experiment. Upon solubilization in acetonitrile and using ESI‐QTOFMS, this complex was found as unusual tricoordinate cationic complex 1‐NCCH3 with acetonit… Show more

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Cited by 4 publications
(4 citation statements)
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“…Finally, one further ligand potentially able to coordinate in different ways, pyridinebenzothiazole, reacted with PdCl 2 in DMF under mild heating (60 °C), activated the pyridine C(3)–H bond to afford the rollover complex 106 . Notably, the DMF solvent seems to play a key role in the rollover process, because use of other solvents resulted only in classical coordination ( Figure 54 ) [ 103 ].…”
Section: C–h Bond Activation Through Rollover Cyclometalationmentioning
confidence: 99%
“…Finally, one further ligand potentially able to coordinate in different ways, pyridinebenzothiazole, reacted with PdCl 2 in DMF under mild heating (60 °C), activated the pyridine C(3)–H bond to afford the rollover complex 106 . Notably, the DMF solvent seems to play a key role in the rollover process, because use of other solvents resulted only in classical coordination ( Figure 54 ) [ 103 ].…”
Section: C–h Bond Activation Through Rollover Cyclometalationmentioning
confidence: 99%
“…As we mention, part of our research has been addressed to understand the unusual reactivity of pyridine with Ir( iii ) giving the NHC-complexes; 17,18 bromo-pyridin derivative toward Pd( ii ) and Pt( ii ) complexes, where the bromine atom at pyridine ring regulates the coordination mode behaviour on the formation of platinum pincer complexes, seven-membered and rollover palladacycles. 33–37…”
Section: Introductionmentioning
confidence: 99%
“…32 As we mention, part of our research has been addressed to understand the unusual reactivity of pyridine with Ir(III) giving the NHC-complexes; 17,18 bromo-pyridin derivative toward Pd(II) and Pt(II) complexes, where the bromine atom at pyridine ring regulates the coordination mode behaviour on the formation of platinum pincer complexes, seven-membered and rollover palladacycles. [33][34][35][36][37] Herein, we report the first rollover cyclometallation reaction into the new 2-(6-bromo-pyridin-2-yl)imidazo [1,2-a]pyridine type ligand prompted by IrCl 3 , under mild reaction conditions, using dimethylformamide (DMF) as a solvent at 70 1C for a week under air. Additionally, we performed DFT calculations to propose a reaction mechanism that sheds some light on the reaction order of this C-H bond activation in the presence of Br-pyridine group.…”
Section: Introductionmentioning
confidence: 99%
“…In 2018, we reported a direct synthesis on rollover palladacycles was achieved via C-H bond activation reaction in remote position on Br-pyridyl-benzothiazole (L PB2 ) by PdCl 2 , where the dimethylformamide plays an important role on the reaction pathway. 20 However, to the best of our knowledge, wellcharacterized transition metal complexes containing L PB ligands showing a N-k 1 -coordinated mode still relatively scarce in the literature. 7 Here in, we report our DFT calculations and experimental results on the reactivity of Br-Pyridylbenz-(imida, oxa or othia)-zole ligands toward platinum complexes.…”
Section: Introductionmentioning
confidence: 99%