Non-photochemical degradation of perfluorinated photochromic diarylethenes (DAE) under Knoevenagel, Sonogashira or Wittig conditions was discovered. This base promoted formation of strongly colored non-photochromic byproducts has an impact in the field of molecular electronics due to the basic conditions often employed during deacylation and desilylation of the protected thiol anchoring groups of functionalized DAE. The products were identified as seven-membered ring systems of the bicyclo[5.3.0]deca-1,7-diene type. Their formation was rationalized by a tentative two-step reaction mechanism.
在Knoevenagel、Sonogashira或Wittig条件下,发现
全氟化光致变色二芳基
乙烯(
DAE)的非光
化学降解。这种碱促进的生成具有强烈颜色的非光致变色副产物对分子电子学领域产生了影响,因为在去酰化和脱
硅烷化过程中,常常使用基本条件处理功能化
DAE的保护
硫醇锚定基团。产物被鉴定为双环[5.3.0]十碳-1,7-二烯型的七元环体系。它们的形成可通过一个暂定的两步反应机理解释。