Synthesis of Highly Functionalized Spirocycles and Pentafulvene‐Containing Dyes Involving 2‐(2′‐ketoalkyl)‐1,3‐indandiones
作者:Gitanjali Mishra、Mukesh Sasmal、Arundhuti Chakraborty、Barla Thirupathi
DOI:10.1002/chem.202301976
日期:2023.12.19
carbon-centered spiro[4.4]nonanes and spiro[4.5]decanes by treating cheap dimethylacetylenedicarboxylate with 2-(2′-ketoalkyl)-1,3-indandiones and 2-(3′-ketoalkyl)-1,3-indandiones, respectively. Additionally, spiro[4.4]nonane products were further transformed into highly conjugated pentafulvene-based dyes simply by treating them with TFA or H2SO4. The reported method provides an excellent yield and ample tunability
我们描述了一种简单的方案,用于通过用 2-(2'-酮烷基)-1,3-茚满二酮和 2-(3 '-酮烷基)-1,3-茚满二酮,分别。此外,只需用TFA或H 2 SO 4处理,螺[4.4]壬烷产品就可以进一步转化为高度共轭的五富烯基染料。所报道的方法在无金属条件下提供了优异的产率和富烯骨架周围充足的可调性。