1030380-50-7Relevant articles and documents
Influence of substituted pyridine rings on physical properties and electron mobilities of 2-methylpyrimidine skeleton-based electron transporters
Sasabe, Hisahiro,Tanaka, Daisaku,Yokoyama, Daisuke,Chiba, Takayuki,Pu, Yong-Jin,Nakayama, Ken-Ichi,Yokoyama, Masaaki,Kido, Junji
experimental part, p. 336 - 342 (2011/12/15)
A series of 2-methylpyrimidine skeleton-based electron-transporting derivatives (BPyMPM) are designed and synthesized to investigate the influence of substituted pyridine rings on the physical properties and electron mobilities (μe). The only structural difference is the position of substituted pyridine rings. The melting point (Tm) of B4PyMPM is estimated to be ca. 50 °C higher than that of B3PyMPM, and ca. 120 °C higher than that of B2PyMPM. The ionization potential is observed to increase in the order B2PyMPM (6.62 eV) e at 298 K of B4PyMPM is 10 times higher than that of B3PyMPM and 100 times higher than that of B2PyMPM. To extract the charge transport parameters, the temperature and field dependencies of μe are investigated. Using Baessler's disorder formalism, the degree of energetic disorder is estimated to decrease in the order B2PyMPM (91 meV) > B3PyMPM (88 meV) > B4PyMPM (76 meV), and the positional disorder is 2.7 for B2PyMPM, and e) of 2-methylpyrimidine skeleton-based electron-transporters is investigated. Although the structural difference is very small, the difference in μe is found to be quite large. At 298 K, the μe of B4PyMPM is measured to be 10 times higher than that of B3PyMPM and 100 times higher than that of B2PyMPM. Copyright
Palladium-catalyzed cross-coupling reaction of 2- and/or 5-substituted 4,6-dichloropyrimidines with arylboronic acids
Tumkevicius,Dodonova,Baskirova,Voitechovicius
experimental part, p. 960 - 964 (2009/12/06)
(Chemical Equation Presented) The Suzuki-Miyaura reaction of some 4,6-dichloropyrimidines bearing methylthio-, methyl-, amino-, cyano-, formyl-, and nitro groups in positions 2 and/or 5 of the pyrimidine ring with arylboronic acids has been investigated. Influence of palladium catalyst, ligand, base, and solvent on the reaction outcome was studied. The reaction was found to give the corresponding 4,6-diarylpyrimidines in reasonable yields using Pd(OAc) 2/PPh3/K3PO4 or Pd(PPh 3)2Cl2/K3PO4 as catalyst systems.