Reactions of 1,1-di(2-naphthyl)-2,2-dichloroethene and 1,1-di(2-benzothienyl)-2,2-dichloroethene with sulfur at 220–225 °C resulted in hitherto unknown oligothiophenes. Tetrathio[6]helicene was synthesized from 1,1-di(3-benzothienyl)-2,2-dichloroethene. Preparative pathway to helicene involving intramolecular ring closure of dithiol derived from 1,1-di-(3-benzothienyl)-2,2-dichloroethene was developed as an alternative to high temperature synthesis.
1,1-二(2-
萘基)-2,2-二
氯乙烯和1,1-二(2-苯并噻烷基)-2,2-二
氯乙烯与
硫在220-225°C下反应生成了迄今为止未知的寡
硫烯。四
硫[6]螺旋烯是由1,1-二(3-苯并噻烷基)-2,2-二
氯乙烯合成的。开发了一条合成螺旋烯的新路径,该路径涉及从1,1-二(3-苯并噻烷基)-2,2-二
氯乙烯衍生的二
硫醇的分子内环闭合,作为高温合成的替代方案。