A new strategy to reach highly extended and quinonoid tetrathiafulvalene (TTF) derivatives
摘要:
2,3-Bis(bromomethyl)TTFs 4 are used as precursors of 2,3-dimethylene-[2H]-TTFs 5 to reach cycloadducts of high synthetic interest via a [4+2] cycloaddition with quinonic derivatives. Subsequent Horner-Wadsworth-Emmons olefinations with a 1,3-dithiole phosphonate anion afforded highly extended and sulfur-rich analogs of tetrathiafulvalene 1. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
The synthesis of bis-TTF 1 and tris-TTF 2, linked by an ethenyl spacer, is described using new useful Wittig-type reagents with the introduction of phosphonate functionality on 1,3-dithiole and TTF frameworks. Electrochemical and spectroscopic studies show intramolecular electronicinteractions between conjugated TTF units.
Glycoluril-based molecularclips incorporating tetrathiafulvalene (TTF) sidewalls have been synthesized through different strategies with the aim of investigating the effect of electrochemical and spatial properties for binding neutral accepting guests. We have in particular focused our study on the spacer extension in order to tune the intramolecular TTF...TTF distance within the clip and, consequently
Novel [60]fullerene–TTF cyclohexene fused polyadducts: unprecedented tri- and tetra-Diels–Alder adducts of dimethylidene[2H]tetrathiafulvalenes with C60
The title compounds, which are formed in very low yields by treating 2,3-bis(bromomethyl)tetrathiafulvalenes with naked iodide in the presence of C60, can be obtained in much higher yields by successive similar treatments of the major adducts produced at each step. The electrochemical properties of the unprecedented tri- and tetra-TTF/C60 assemblies are also presented.
通过在C 60存在下用裸碘化物处理2,3-双(溴甲基)四硫富瓦烯以极低的收率形成标题化合物,可以通过连续地对每种化合物产生的主要加合物进行类似的处理,以高得多的收率获得这些化合物。步。还介绍了空前的三-和四-TTF / C 60组件的电化学性能。
New versatile building blocks in tetrathiafulvalene (TTF) chemistry: 2,3-bis(bromomethyl) and tetrakis(bromomethyl)TTFs
Efficient syntheses of novel 2,3-bis(bromomethyl)TTF derivatives 1 and tetrakis(bromomethyl)TTF 2, prone to generate corresponding 2,3-dimethylene[2H]-TTF 3 and tetramethylene[4H]-TTF 4 respectively, are reported. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.
10.1016/s0022-2860(02)00240-5
作者:Graja, Andrzej、Olejniczak, Iwona、Bogucki, Andrzej