作者:Valentine G. Nenajdenko、Viktor V. Sumerin、Konstantin Yu. Chernichenko、Elizabeth S. Balenkova
DOI:10.1021/ol048835s
日期:2004.9.1
[reaction: see text] A new convenient method for the construction of thiophene-annulated thieno[2,3-b]thiophenes has been proposed. The key step of the method is ring closure of 10H-bisthienodithiocin-10-one by strong bases. The syntheses of two previously unknown annulated oligothiophenes, thieno[2,3-b]thieno[3',2':4,5]thieno[3,2-d]thiophene (1a) and thieno[3,2-b]thieno[2',3':4,5]thieno[3,2-d]thiophene
[反应:见正文]提出了一种构建噻吩环化噻吩并[2,3-b]噻吩的新便捷方法。该方法的关键步骤是用强碱将10H-二硫代二硫辛-10-酮闭环。两种以前未知的环状低聚噻吩的合成,thieno [2,3-b] thieno [3',2':4,5] thieno [3,2-d]噻吩(1a)和thieno [3,2-b] Thieno [2',3':4,5] thieno [3,2-d]噻吩(1b)已被描述来说明该方法的成功。