Synthesis and properties of fully conjugated macrocycles composed of m -diethynylene-phenylene-bridged two dibenzofuran, dibenzothiophene and carbazole units
Fullyconjugated macrocycles 1a−1c composed of m-diethynylene-phenylene-bridged two dibenzofuran, dibenzothiophene and carbazole units were synthesized via Sonogashira cross coupling reactions under high-diluted condition. These conjugated macrocycles were fully characterized by 1H NMR, 13C NMR, FT-IR, Mass spectroscopies and elemental analysis. Photophysical and redox properties of 1a−1c were investigated
完全共轭的大环化合物1A - 1C组成的米-diethynylene亚苯基桥连的2二苯并呋喃,二苯并噻吩和咔唑单元被通过高稀释条件下的Sonogashira交叉偶联反应来合成。这些共轭的大环化合物通过1 H NMR,13 C NMR,FT-IR,质谱和元素分析进行了全面表征。分别通过紫外可见/荧光光谱和循环伏安法研究了1a - 1c的光物理性质和氧化还原性质,并将这些特征与相应的线性苯基乙炔基二苯并杂酚11a - 11c进行了比较。。此外,在理论上以B3LYP / cc-pVDZ // B3LYP / 6-31G(d)的水平通过理论计算研究了它们的结构和电子见解。
Catalytic Asymmetric Synthesis of Zinc Metallacycles
作者:Hayden D. Bishop、Qiang Zhao、Christopher Uyeda
DOI:10.1021/jacs.3c05885
日期:2023.9.20
Transition-metal-catalyzed reductive coupling reactions of alkynes and imines are attractive methods for the synthesis of chiral allylic amines. Mechanistically, these reactions involve oxidative cyclization of the alkyne and the imine to generate a metallacyclic intermediate, which then reacts with H2 or a H2 surrogate to form the product. As an alternative to this hydrogenolysis pathway, here we
report a metallaphotoredox strategy for stereodivergent three-component carboallylation of terminal alkynes with allylic carbonates and alkyl trifluoroborates. This redox-neutral dual catalytic protocol utilizes commercially available organic photocatalyst 4CzIPN and nickel catalysts to trigger a radical addition/alkenyl–allyl couplingsequence, enabling straightforward access to functionalized 1,4-dienes
Provided are a conjugated polymer containing ethynyl crosslinking group, mixture, composition, organic electronic device containing the same and application thereof. The conjugated polymer material has a conjugated main chain structure and an ethynyl crosslinking group as a functional side chain. The conjugated polymer material produces an insoluble and unmeltable crosslinked interpenetrating network polymer film under heating, has excellent solvent-resistance, and is suitable for manufacturing a complex multi-layer organic electronic device. The conjugated polymer can be applied in optoelectronic devices such as an organic field effect transistor, an organic light emitting diode (OLED), a polymer solar cell, a perovskite solar cell, etc, and improves device performance.
Provided are a conjugated polymer containing ethynyl crosslinking group, mixture, formulation, organic electronic device containing the same and application thereof. The conjugated polymer material has a conjugated main chain structure and an ethynyl crosslinking group as a functional side chain. The conjugated polymer material produces an insoluble and unmeltable crosslinked interpenetrating network polymer film under heating, has excellent solvent-resistance, and is suitable for manufacturing a complex multi-layer organic electronic device. The conjugated polymer can be applied in optoelectronic devices such as an organic field effect transistor, an organic light emitting diode (OLED), a polymer solar cell, a perovskite solar cell, etc, and improves device performance.