106925-79-5Relevant articles and documents
Palladium-catalyzed coupling reactions of bromothiophenes at the C-H bond adjacent to the sulfur atom with a new activator system, AgNO3/KF
Kobayashi, Kei,Sugie, Atsushi,Takahashi, Masabumi,Masui, Kentaro,Mori, Atsunori
, p. 5083 - 5085 (2005)
(Chemical Equation Presented) Bromothiophene derivatives react with aryl iodides catalyzed by a palladium complex in the presence of a silver(I) nitrate/potassium fluoride system to induce coupling at the C-H bond, while the carbon-bromine bond is intact.
Bisthiophene/triazole based 4,6-diamino-1,3,5-triazine triblock polyphiles: Synthesis, self-assembly and metal binding properties
Liu, Chao,Gao, Hongfei,Li, Taihao,Xiao, Yulong,Cheng, Xiaohong
, p. 294 - 302 (2019)
Two series of 4,6-diamino-1,3,5-triazine triblock polyphiles consisting of an extremely long bisthiophene/triazole based rigid cores, with flexible alkyl chains at one end and a polar 4,6-diamino-1,3,5-triazine at the other end were synthesized. Colh
Rodlike 4,6-diamino-1,3,5-triazine derivatives, effect of the core length on mesophase behavior and their application as LE-LCD device
Tan, Xiaoping,Chang, Qing,Su, Fawu,Cao, Yu,Liu, Feng,Cheng, Xiaohong
, (2021/11/16)
Three series of diaminotriazine derivatives with different core length have been synthesized, and the influence of the structural variation as well as the temperature on their mesophase behaviour were systematically investigated. With focus on the formation of CubI/Im3ˉm phase, multiple 2D/3D phases were discovered. Confirmed by polarized optical microscope, small/wide angle X-ray scattering, grazing incident small-angle X-ray scattering as well as molecular dynamics simulation, the results indicate that molecular curvature is critical to self-assembly structures. Moreover, the prerequisite for the formation of the CubI/Im3ˉm phase is intermediate molecular curvature on the surface of the micelle to allow the intercalation of the alkyl chains. Finally, the potentials for such compounds as light-emitting liquid crystal display (LE-LCD) device has been initially demonstrated.
Rapid access to unsymmetrical 1,3-diynes and 2,5-disubstituted thiophenes under ligand and Pd/Ni-free Cu-catalysis
Rao, Maddali L. N.,Islam, Sk Shamim,Dasgupta, Priyabrata
, p. 78090 - 78098 (2015/09/28)
A Pd/Ni-free copper-catalysed tandem synthesis was realized for rapid access to unsymmetrical 1,3-diynes from 1,1-dibromoalkenes and terminal alkynes. This method was extended to the straightforward synthesis of unsymmetrical 2,5-disubstituted thiophenes
Introduction of ethynylene and thienylene spacers into 2,5-diarylthiazole and 2,5-diarylthiophene
Kobayashi, Kei,Mohamed Ahmed, Mohamed S.,Mori, Atsunori
, p. 9548 - 9553 (2007/10/03)
Syntheses of 2,5-diarylthiazole and 2,5-diarylthiophene derivatives bearing ethynylene and thienylene spacers are performed. With the methods for coupling reactions of terminal alkynes and at the CH bond of heteroaromatic compounds, which we have develope
Synthesis of 5,5′-diarylated 2,2′-bithiophenes via palladium-catalyzed arylation reactions
Yokooji, Aya,Satoh, Tetsuya,Miura, Masahiro,Nomura, Masakatsu
, p. 6757 - 6763 (2007/10/03)
2,2′-Bithiophene and 3,3′-dicyano-2,2′-bithiophenes are diarylated directly with aryl bromides at the 5- and 5′-positions accompanied by C-H bond cleavage in the presence of Pd(OAc)2 and a bulky phosphine ligand using Cs2CO3 as base. In the reaction using (2,2′-bithiophen-5-yl)diphenylmethanol as the substrate, monoarylation at the 5-position via C-C bond cleavage occurs selectively to give 5-aryl-2,2′-bithiophenes and the subsequent arylation with a different aryl bromide affords the corresponding unsymmetrically 5,5′-diarylated products.
