Efficient preparation of N′,N″-1H-isoindole-1,3-diylidenedicarbohydrazides via 1,1,3-trichloro-1H-isoindole, and their characterization
作者:Olga V. Hordiyenko、Igor V. Rudenko、Angelina V. Biitseva、Aleksandr V. Turov、Axelle Arrault、Nicolas Brosse、Olivier Fabre、Brigitte Jamart-Grégoire、Roman I. Zubatyuk、Oleg V. Shishkin
DOI:10.1016/j.tet.2009.05.031
日期:2009.8
N',N ''-isoindole-1,3-diylidenedialkyl(aryl.heteroaryl)carbohydrazides were prepared in good yields via 1,1,3-trichloro-1H-isoindole, which was shown to be a versatile reagent for their synthesis. Tautomeric structure and conformational behaviour of dicarbohydrazides in solid state as well as in solution have been studied by X-ray crystallography, NMR spectroscopy and quantum calculations. The dependence of Z/E amide-type isomerism upon steric effects and solvent polarity is discussed. (C) 2009 Elsevier Ltd. All rights reserved.
Bishydrazide Derivatives of Isoindoline as Simple Anion Receptors
作者:Paweł Dydio、Tomasz Zieliński、Janusz Jurczak
DOI:10.1021/jo802288u
日期:2009.2.20
Isoindoline has been investigated as a scaffold for the construction of anion receptors. A family of bishydrazide derivatives of isoindoline has been synthesized, and the anion-binding properties of these receptors were investigated both in solution and in the solid state. Enhanced affinity toward halides has been observed for isoindoline-based ligands compared to analogous pyrroledicarboxyamides.