Hydroxymethyl-Functionalised 9,10-Bis(1,3-dithiol-2-ylidene)-9,10-Dihydroanthracene π-Electron Donors as Synthetic Intermediates for Supramolecular Structures
作者:Nicolas Godbert、Martin R. Bryce、Slimane Dahaoui、Andrei S. Batsanov、Judith A. K. Howard、Paul Hazendonk
DOI:10.1002/1099-0690(200102)2001:4<749::aid-ejoc749>3.0.co;2-v
日期:2001.2
structures of compounds 4, 5a, 5b·CH2Cl2, 10 and 11 are reported. The molecules adopt a saddle-like conformation; the bis(1,3-dithiol-2-ylidene)-9,10-dihydroanthracene system is U-shaped due to the boat conformation of the central quinodimethane ring and folding of both the 1,3-dithiole rings. Each compound displays a dimeric packing motif which is most pronounced for 5a and 5b·CH2Cl2. Both these structures
据报道,合成了9,10-双(1,3-二硫醇-2-亚烷基)-9,10-二氢蒽的新衍生物。对化合物4的1 H NMR研究与鞍形分子的两个构象一致,该构象在高温下通过中心环的舟动翻转而相互转换。4的羟甲基取代基易于酯化,分别生成苯甲酰基和2-萘甲酸酯衍生物5a和5b,以及二聚体和三聚体结构6和7分别通过与苯甲酰氯,2-萘甲酰氯,1,4-苯二羰基氯和1,3,5-苯三羰基氯反应来进行。使用双(三甲基甲硅烷基)锂使9-(4,5-二甲基-1,3-二硫醇-2-亚烷基)-10-(1,3-二硫醇-2-亚烷基)-9,10-二氢蒽(8)脱质子化酰胺(LHMDS),然后用氯甲酸甲酯原位淬灭锂化的中间体,得到二酯衍生物10(96%收率),而使用LDA得到单酯9作为主要产物(32%收率)。将二酯10还原为二(羟甲基)衍生物11。通过循环伏安法研究了这些新化合物的溶液电化学:9的酯取代基和10与π框架共轭,导致E ox发