Facile preparation and reactivity of polystyrene-supported (dichloroiodo)benzene: a convenient recyclable reagent for chlorination and oxidation
作者:Jiang-Min Chen、Xiao-Mei Zeng、Kyle Middleton、Viktor V. Zhdankin
DOI:10.1016/j.tetlet.2011.02.065
日期:2011.4
of polystyrene-supported (dichloroiodo)benzene (loading of -ICl2 up to 1.35 mmol/g) from polystyrene, iodine, and bleach has been developed. This recyclable reagent is useful for efficient chlorination of organic substrates and selective oxidation of various alcohols to the corresponding carbonyl compounds in high yields under mild conditions. The final products are conveniently separated from the polymeric
Nitration of Fullerene Derivatives under Mild Conditions
作者:Fernando Langa、Frédéric Oswald、Pilar de la Cruz
DOI:10.1055/s-2007-977425
日期:2007.4
A new family of N-(2,4-dinitrophenyl)-2-pyrazolino[60]fullerene derivatives has been synthesized by electrophilic nitration using nitronium triflate. As evidenced by CV and OSWV experiments, these species show enhanced electron-accepting properties (up to 90 mV) with respect to C60.
Studies on the kinetics of tripropylammonium fluorochromate oxidation of some aromatic alcohols in non-aqueous media
作者:S. Sheik Mansoor、S. Syed Shafi
DOI:10.1016/j.molliq.2010.05.012
日期:2010.8
The oxidation of benzyl alcohol (BnOH) and a few para-substituted benzyl alcohols by tripropylammonium fluorochromate (TriPAFC) in dimethylsulphoxide (DMSO) leads to the formation of corresponding aldehydes. The reaction is first order each in TriPAFC and the alcohols. The reaction is catalysed by hydrogen ions. The hydrogen ion dependence has the form: kobs = a + b[H+]. The oxidation of αα′-dideuterio
苄基醇(BnOH)和一些对位取代的苄醇在二甲亚砜(DMSO)中被氟代三丙基氟铬酸铵(TriPAFC)氧化导致形成相应的醛。该反应在TriPAFC和醇中均为一级反应。该反应由氢离子催化。氢离子依赖性具有以下形式:k obs = a + b [H + ]。αα'-二氘代苄醇的氧化表现出显着的一级动力学同位素效应(k H / k D = 303 K时为5.45)。在19种不同的有机溶剂中研究了苯甲醇的氧化。已使用Kamlet和Swain多参数方程分析了溶剂效应。提出了一种通过铬酸酯转移氢离子的机理。
Insights into the electrooptical anion sensing properties of a new organic receptor: solvent dependent chromogenic response and DFT studies
作者:Srikala P.、Kartick Tarafder、A. Nityananda Shetty、Darshak R. Trivedi
DOI:10.1039/c6ra16197a
日期:——
based electrooptical receptor featuring solvent based color transition properties in the presence of acetate ions has been developed. The AcO− ion mediated color transition properties of a new organic receptor in solvents of varying polarity highlights the influence of dipole moment in stabilizing the excited state. Selective detection of acetate ions by a new organic receptor in the presence of DMSO : Tris
Fluorescent sensing of water in DMSO by 2,4-dinitrophenyl hydrazine derived Schiff base
作者:R. Behura、S. Behera、P. Mohanty、P.P. Dash、R. Panigrahi、B.S. Mallik、Suban K. Sahoo、B.R. Jali
DOI:10.1016/j.molstruc.2021.132086
日期:2022.3
analysis of tracewater in organicsolvents remains a hotspot in current research because of the importance in both industrial and laboratory scale chemistry. This study introduced a fluorescence chemosensor (L3) for the detection of tracewater in dimethyl sulfoxide (DMSO). Addition of water into the DMSO solution of L3 resulted a significant fluorescence enhancement at 533 nm with a detection limit of