Beiträge zur chemie des iodpentafluorids Teil V. IF5 als oxidatives fluorierungsmittel für elementorganika des arsens, antimons und bismuts: selektivität und methodische grenzen
Carbonylative C−C Bond Activation of Electron-Poor Cyclopropanes: Rhodium-Catalyzed (3+1+2) Cycloadditions of Cyclopropylamides
作者:Andrew G. Dalling、Takayuki Yamauchi、Niall G. McCreanor、Lydia Cox、John F. Bower
DOI:10.1002/anie.201811460
日期:2019.1.2
Rh‐catalyzed carbonylative C−C bond activation of cyclopropylamides generates configurationally stable rhodacyclopentanones that engage tethered alkenes in (3+1+2) cycloadditions. These studies provide the first examples of multicomponent cycloadditions that proceed through C−C bond activation of “simple” electron poor cyclopropanes.
Fundamental Study on Arsenic(III) Halides (AsX<sub>3</sub>; X = Br, I) toward the Construction of <i>C</i><sub>3</sub>-Symmetrical Monodentate Arsenic Ligands
Arsenicligands have attracted considerable attention in coordination chemistry. Arsenic(III) halides are the most important starting materials in the preparation of monodentate arsenicligands. In this work, we optimized the synthetic methodologies of arsenic(III) halides (AsX3; X = Br, I) and examined the difference of their physical properties such as solubility to organic solvent and reactivity
砷配体在配位化学中引起了相当大的关注。卤化砷(III)是制备单齿砷配体的最重要原料。在这项工作中,我们优化了卤化砷(III)(AsX 3; X = Br,I)的合成方法,并研究了其物理性质的差异,例如对有机溶剂的溶解度和对亲核试剂的反应性。此外,用获得的AsX 3制备了多种单齿砷配体。最后,将所获得的单齿砷配体用于与卟啉的反应体系中的无铜Sonogashira交叉偶联反应。结果表明,单齿砷配体比三苯基膦具有更高的催化活性,这是由于砷和磷原子之间的孤对电子特性不同。
FROHN H. J.; MAURER H., J. FLUOR. CHEM., 34,(1986) N 1, 129-145
作者:FROHN H. J.、 MAURER H.
DOI:——
日期:——
Beiträge zur chemie des iodpentafluorids Teil V. IF5 als oxidatives fluorierungsmittel für elementorganika des arsens, antimons und bismuts: selektivität und methodische grenzen
作者:H.J. Frohn、H. Maurer
DOI:10.1016/s0022-1139(00)81932-6
日期:1986.11
Tertiary arsine ligands for the Stille coupling reaction
that the triphenylarsine ligand can accelerate the reaction rate of Stille coupling. However, other arsine ligands have never been investigated for the Stille coupling reaction so far. In this work, we prepared 13 kinds of C3-symmetrical tertiary arsine ligands and discovered that tri(p-anisyl)arsine is the best ligand for the reaction of tributylvinyltin and p-iodoanisole. The reaction mechanism was