Indolocarbazoles: a new family of anion sensors

Abstract

Simple preorganised indolo[2,3-a]carbazole derivatives are shown to recognise and sense anionic guest species using fluorescence spectroscopy.

Probing Receptor–Anion Interactions by Ratiometric Chemosensors Containing Pyrrolecarboxamide Interacting Sites

“…[a] δ [ppm] Pyrrole N-H [b] Amide N-H [b] Phenyl C-H Pyrrole C-H [c] No 11.6 (1), 11.9 (2), 11.9 (3), 12.1 (4), 9.36 (1), 10.1 (2), 10. (5) 6.75 (4), 6.80 (5) identities and structures of all five compounds were characterized by 1 H NMR spectroscopy, high-resolution mass spectrometry, and elemental analysis. …”

“…[2] Notable examples include receptors containing pyrrolic moieties, [3] amide groups, [4] indolocarbazoles, [5] imidazolium groups, [6] and urea or thiourea derivatives. [7] Typically, the anions form N-H···A -hydrogen bonds with these receptors.…”

Direct stereoselective α-arylation of unmodified enals using an organocatalytic cross-coupling-like reaction

“…In general, more hindered substrates react with diminished E / Z selectivities (entries Table 1 44 . Moreover, recently, their application has been expanded to the areas of molecular imaging and material chemistry 45,46 . As demonstrated, for instance, compound 3m can be effi ciently transformed to furocarbazole S5 through a photoelectronic cyclization-photoinduced decarboxylation cascade ( Fig.…”

Syntheses, Spectral Properties of Novel Carbazole Derivatives and Evaluations of Its Ct-DNA Interaction

“…、离子识别 [10,11] 等领域的优良性能引起 了人们极大的兴趣和广泛的研究. 另外, 近年来也有研 究证实, 结构合理修饰后的咔唑衍生物也具有良好的生 物活性和抗肿瘤性能 [12～14] , 如: 黄志纾等 [13] 合成了一 系列 3,6 位为乙酰胺基取代的咔唑衍生物, 它作为 G-四 链体的配体, 对正常细胞和癌细胞展示了选择性的抑制 活性; 张大钊等 [14] 开发的 3,6-二烯基衍生的咔唑衍生物 (BMVC), 其不但能利用荧光检测四链体脱氧核糖核酸 (DNA)结构, 而且可以抑制端粒酶活性; 贾涛等 [15] 在研 基于此, 本文以咔唑为起始原料, 根据文献报道以 及我们以往的经验 [16,17] , 在关键的两步 C-N 键偶联反 应中, 分别利用了 CuBr•SMe 2 (自制) [18] 和 Pd(OAc) 2 催化 合成, 制备了一系列 3,6,9-三取代的咔唑衍生物.…”