The development of organic metals based on newly modified TTF (tetrathiafulvalene) and DSDTF (diselenadithiafulvalene) donors via the Lewis acid-promoted reactions of organotin compounds with electrophiles is described. The Me
3
Al-promoted reaction is versatile for construction of 1,3-dichalcogenol-2-ylidene moieties, and the BF
3
-promoted reaction is utilized to prepare the 1,3-dithiole-2-chalcogenone derivatives condensed with a bis-fused six-membered heterocycle. The use of these reactions enables us to synthesize DHTTF (dihydrotetrathiafulvalene) donors, DHTTF-fused donors, DSDTF donors incorporating the vinylenedithio end group, and TTF donors with an extended periphery by addition of aliphatic heterocycles. The crystal structures of radical-cation salts derived from these π-electron donors, including some new κ-type salts with a 2:1 (donor:anion) stoichiometry, are also disclosed.
本文介绍了通过
路易斯酸促进
有机锡化合物与亲电体的反应,开发基于新修饰的
TTF(四
噻吩富
戊二烯)和 D
SDTF(二
硒二
噻吩富
戊二烯)供体的有机
金属。Me 3 Al 促成的反应可用于构建 1,3-二羰基烯-2-亚基分子,而 BF 3 促成的反应则可用于制备与双融合六元杂环缩合的 1,3-二
硫代-2-羰基烯酮衍
生物。利用这些反应,我们可以合成 DH
TTF(二氢四
硫富
戊烯)供体、DH
TTF-融合供体、含有
乙烯二
硫末端基团的 D
SDTF 供体,以及通过添加脂肪族杂环而具有扩展外围的
TTF 供体。此外,还公布了由这些π电子供体衍生的自由基阳离子盐的晶体结构,包括一些具有 2:1(供体:阴离子)
化学计量的新型κ型盐。