6389-56-6Relevant academic research and scientific papers
Synthesis, characterization, and anticancer activities of lipophilic pyridinecarboxaldimine platinum(II) complexes
Miles, Brittany A.,Patterson, Alyssa E.,Vogels, Christopher M.,Decken, Andreas,Waller, Jeffrey C.,Morin, Pier Jr.,Westcott, Stephen A.
, p. 23 - 29 (2016)
We have prepared eleven pyridinecarboxaldimines (N-N'R) from the condensation of 2-pyridinecarboxaldehyde and the corresponding lipophilic primary amines. Addition of these ligands to [PtCl2(η2-coe)]2 (coe = cis-cycloocten
Molybdenum (VI) Complexes Containing Pyridylimine Ligands: Effect of the Imine Nitrogen Substituent in the Epoxidation Reaction
Martínez-Martínez, Daniel,Santiago, M. León,Toscano, Rubén A.,Amézquita-Valencia, Manuel
supporting information, p. 243 - 251 (2020/12/30)
A series of pyridylimine ligands with variations of the substituent at the imine nitrogen were synthesized and coordinated to the [MoCl2O2] core. The novel molecular structures of the complexes were fully characterized by 1H and 13C NMR, FT-IR, ESI, EA, and X-ray crystallography, and their catalytic activity was studied for the epoxidation of alkenes using tert-butyl hydroperoxide (TBHP) as the oxidant. The new complexes showed excellent catalytic activity and fine selectivity in the epoxidation reaction compared with similar homogeneous molybdenum complexes. The results demonstrated that there is a significant change in the catalytic performance, depending on the alkyl arm on the structure of the pyridilimine ligand. The catalytic results indicated that complex [MoCl2O2(L)] (L: N-(2-Pyridinylmethylene)-1-tert-butylimine) C5 is the best catalytic precursor in the epoxidation of cyclohexene (TON: 92920 and TOF: 30974 h?1).
Access to indolines from primary phenylethylamines by an unexpected palladium-catalyzed C-H functionalization process
Mancinelli, Andrea,Albert, Joan,Ariza, Xavier,Barrios, Leoní A.,Garcia, Jordi,Gómez, Roberto,Granell, Jaume
, p. 27176 - 27182 (2019/09/12)
A new method for the preparation of 2,2-disubstituted indolines from 2-phenylethylamines was developed under Pd catalysis and PhI(OAc)2 as oxidant. Imines derived from 2-pyridinecarboxaldehyde were formed in situ to direct a C-H activation proc
Synthesis and crystal structure determination of Mn(II) Schiff base complexes and their performance in ethene polymerization
Sood, Anjali,R?is?nen, Minna T.,Aitola, Erkki,Sibaouih, Ahlam,Colacio, Enrique,Ahlgren, Markku,Nieger, Martin,Repo, Timo,Leskel?, Markku
, p. 221 - 229 (2013/07/19)
Mn(II) complexes 1-10, of which eight are novel, were prepared in high yields by reacting MnCl2 with bidentate N,N′-imine-pyridine and N,N′-imine-quinoline-type donor ligands having different kinds of chemical modifications. The complexes were fully characterized by elemental analysis, mass spectrometry and IR spectroscopy. Crystal structures of 6, 7 and 9 were determined by X-ray crystallography and the results showed that 6 has a dimeric square-pyramidal geometry, whereas 7 and 9 have distorted octahedral structures. Magnetic studies on the high spin complexes 6 and 9 showed that the former exhibits a weak intramolecular antiferromagnetic interaction through the chloride-bridging ligands with a magnetic exchange coupling J = -0.46(6) cm -1, whereas the latter, as expected for its mononuclear structure, only shows very weak intermolecular interactions and/or zero-field splitting effects. All the complexes were activated with methylaluminoxane and investigated under low pressure (5 bar) for ethene polymerization at 60 C. Complexes 1 and 6-10 showed catalytic activity. The prepared polyethenes exhibited high molar masses (296 000-399 000 g/mol) and high melting temperatures (133-140 C). The low molar mass distribution values of 2.15-2.55 indicated single-site polymerization behavior.
