[EN] TRIPHENYLENE DERIVATIVES FOR USE IN IMAGING BIOLOGICAL TISSUE OR FLUID [FR] DÉRIVÉS DE TRIPHÉNYLÈNE POUR UTILISATION DANS L'IMAGERIE DE TISSU OU DE FLUIDE BIOLOGIQUE
A benzene-bridged divanadium complex-early transition metal catalyst for alkene alkylarylation with PhI(O<sub>2</sub>CR)<sub>2</sub><i>via</i> decarboxylation
作者:Lei Zhang、Hongfei Zhou、Shaokun Bai、Shaodan Li
DOI:10.1039/d0dt04295a
日期:——
alkene alkylarylation with hypervalent iodine(III) reagents (HIRs) via decarboxylation to generate regioselectively diverse indolinones. Furthermore, the mild nature of this reaction was amenable to a wide range of functionalities on alkenes and HIRs. Mechanistic studies revealed a relay sequence of decarboxylative radical alkylation/radical arylation/oxidative re-aromatization.
全面研究了苯桥二钒配合物的合成,结构和催化活性。通过以苯为溶剂用石墨烯酸钾(KC 8)还原由β-二酮化支持的(Nacnac)VCl 2(1)(Nacnac =(2,6- i Pr 2 C 6 H 3 NCMe)2 HC)访问苯桥连的倒夹心二钒配合物(μ-η 6:η 6 -C 6 H ^ 6)[V(Nacnac)] 2(图2a),它可催化与高价碘烯烃alkylarylation(III试剂(HIR)通过脱羧生成区域选择性多样的吲哚啉酮。此外,该反应的温和性质适合于烯烃和HIR的多种官能度。机理研究揭示了脱羧自由基烷基化/自由基芳基化/氧化再芳构化的中继序列。
Detailed Study of C−O and C−C Bond-Forming Reductive Elimination from Stable C<sub>2</sub>N<sub>2</sub>O<sub>2</sub>−Ligated Palladium(IV) Complexes
作者:Joy M. Racowski、Allison R. Dick、Melanie S. Sanford
DOI:10.1021/ja9014474
日期:2009.8.12
This paper describes the synthesis of a series of Pd(IV) complexes of general structure (N~C)(2)Pd(IV)(O(2)CR)(2) (N~C = a rigid cyclometalated ligand; O(2)CR = carboxylate) by reaction of (N~C)(2)Pd(II) with PhI(O(2)CR)(2). The majority of these complexes undergo clean C-O bond-forming reductive elimination, and the mechanism of this process has been investigated. A variety of experiments, including
Decarboxylative alkylarylation of alkenes with PhI(O2CR)2 to access benzimidazo[2,1-a]isoquinolin-6(5H)-ones catalyzed by a low-valent divanadium complex
作者:Lei Zhang、Peipei Chen、Shaokun Bai
DOI:10.1016/j.mcat.2022.112200
日期:2022.4
report a divanadium-catalyzed decarboxylative alkylarylation of alkenes with hypervalentiodine(III) reagents (HIRs) for the rapid construction of tetracyclic benzimidazo[2,1-a]isoquinolin-6(5H)-ones. This transformation proceeds regioselectively with viarously substituted N-methacryloyl-2-arylbenzoimidazoles and diverse aliphatic acid-derived HIRs undermildconditions. Furthermore, mechanistic investigations
在此,我们报道了一种用高价碘 (III) 试剂 (HIR) 对烯烃进行二钒催化的脱羧烷基芳基化反应,用于快速构建四环苯并咪唑并[2,1 - a ]isoquinolin-6(5 H )-ones。在温和的条件下,这种转化以区域选择性的方式使用经过大量取代的N-甲基丙烯酰基-2-芳基苯并咪唑和多种脂肪酸衍生的 HIR 进行。此外,机理研究表明,原位产生的烷基自由基引发了这种区域选择性的 6-外环化。
Ligand exchange of aryl iodine dicarboxylates to form reagents with differing solubilities
作者:Vanie Seecharan、Lyse Armand、Jennifer Noorollah、Nirvanie Singh、Andrew Zhang、Kevin P. Freddo、Nicholas Spatola、Sailesh Prasad、Azka Chaudhry、Su Wint War、I. F. Dempsey Hyatt、Daniel L. Silverio