Chin. J. Org. Chem. ›› 2018, Vol. 38 ›› Issue (8): 2116-2121.DOI: 10.6023/cjoc201803055 Previous Articles     Next Articles



赵邦屯a, 付慧敏b, 陈小纪b, 朱卫民b   

  1. a 洛阳师范学院化学化工学院 洛阳 471934;
    b 郑州大学化学与分子工程学院 郑州 450010
  • 收稿日期:2018-03-31 修回日期:2018-05-06 发布日期:2018-05-14
  • 通讯作者: 赵邦屯, 朱卫民;
  • 基金资助:


A New Method for Synthesizing Tetrathiafulvalene Vinylogues

Zhao Bangtuna, Fu Huiminb, Chen Xiaojib, Zhu Weiminb   

  1. a College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang 471934;
    b College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450010
  • Received:2018-03-31 Revised:2018-05-06 Published:2018-05-14
  • Contact: 10.6023/cjoc201803055;
  • Supported by:

    Project supported by the National Natural Science Foundation of China (No. 21172105).

Tetrathiafulvalene vinylogues (TTFV) have attracted for organic-based electronics as their excellent electron donating properties. The most commonly used synthetic access to TTFV is by the oxidative dimerization of corresponding dithiafulvene (DTF) precursors, the oxidants like as I2 and AgBF4 have been reported to promote the dimerization reaction in most cases. However, this method is very limited to lower yield and higher toxicity. Due to the naphthyl fluorescence property and cyanoethylthiolate reactive feature, and through trimethylphosphite-mediated cross-coupling reaction, 4,5-bis(2-cyanoethylsulfanyl)-1,3-dithiole-2-thione (1) reacted with 1-naphthaldehyde to give the dithiafulvalene compound (DTF 2) with the yield of 48%. The dithiafulvalene compound 2 has subjected to an p-chloranil (CA)/methanesulfonic acid (MSA) oxidative dimerization reaction and then a brief reductive aqueous workup with Na2S2O3 to gain tetrathiafulvalene vinylogues (TTFV 3). The optimal reaction conditions achieved for the oxidative TTFV formation are 1.5 equiv. of CA catalyst, the 1:10 volume ratio of MSA and DCM, under nitrogen atomsphere and room temperature, 2.0 h reaction time, and the yield of TTFV 3 with up to 86.7%. All novel compounds were characterized by 1H NMR, 13C NMR, FT-IR and MS methods. Meanwhile, the structure of 3 was identified by X-ray diffraction analysis. Compared with the traditional I2 oxidative dimerization method, the results show that this method is simple, economic and efficient.

Key words: tetrathiafulvalene vinylogue, p-chloranil, methanesulfonic acid, crystal structure, synthesis