Heteroaromatic annulation studies on 2-[bis(methylthio)methylene]-1,3-indanedione: efficient routes to indenofused heterocycles
作者:Rajiv K. Verma、Hiriyakkanavar Ila、Maya Shankar Singh
DOI:10.1016/j.tet.2010.07.031
日期:2010.9
2-[Bis(methylthio)methylene]-1,3-indanedione has been shown to be a useful three carbon 1,3-dielectrophilic synthon for the highly efficient regiospecific synthesis of a variety of indenofused five- and six-membered heterocycles via heteroaromatic annulation. The methodology has been further elaborated to the corresponding N,S-acetals leading to amino substituted heterocycles, thus providing further
2- [双(甲硫基)亚甲基] -1,3-茚满二酮已被证明是一种有用的三碳1,3-二亲电子合成子,可通过杂芳族化合物高效合成区域异构的五元和六元杂环。环。该方法已被进一步阐述为相应的N,S-乙缩醛导致氨基取代的杂环,从而在新合成的杂环框架中提供了进一步的多样性。此外,易于获得细胞毒性茚并[2,1 - c ]喹啉-7-酮和新型多环杂芳族化合物证明了杂芳族环化方案通过α-氧代草酮-S,S的多功能性。-缩醛在产生新的生物学上重要的多环杂芳族化合物中。