The efficient synthesis of perfluoroalkyl-substituted fluorenes directly from indenones, malononitrile and methyl perfluoroalk-2-ynoates via a one-pot two-step three-component cascade process is reported. Up to 12 examples of indenones with various substituents were converted into their corresponding functionalized fluorene derivatives in good to excellent yields.
Indene and Pseudoazulene Discotic Liquid Crystals: A Synthetic and Structural Study
作者:Sara Basurto、Susana García、Ana G. Neo、Tomás Torroba、Carlos F. Marcos、Daniel Miguel、Joaquín Barberá、M. Blanca Ros、M. Rosario de la Fuente
DOI:10.1002/chem.200500155
日期:2005.9.5
Several new liquid-crystalline indene and pseudoazulene systems are reported. These molecules give rise to either columnar hexagonal mesophases and/or columnar plastic phases. The unique nature of these compounds stems from their non-classical discotic structure. Although the molecules have rigid aromatic cores, they lack terminal tails and instead the polarizable atoms (S, halogens) or polar groups