Mesoporous and hexagonally ordered CuAl-SBA-15-catalyzed tandem C–C and C–O bond formation between phenols and allylic alcohols
作者:Shaji Varghese、Chokkalinkam Anand、Dattatray Dhawale、Ajayan Mano、Veerappan V. Balasubramanian、George Allen Gnana Raj、Samuthira Nagarajan、Mohammad A. Wahab、Ajayan Vinu
DOI:10.1016/j.tetlet.2012.08.043
日期:2012.10
A novel mesoporous catalyst, CuAl-SBA-15, with a hexagonally ordered porous structure prepared via a soft-templating approach in a highly acidic medium is used for tandem C–C and C–O bond formation between phenols and allylic alcohols to afford a variety of dihydrobenzopyrans in good yields. The catalyst is also found to be highly active for the synthesis of vitamin E and can be recycled several times
一种新颖的介孔催化剂CuAl-SBA-15,具有在高酸性介质中通过软模板法制备的六角形有序多孔结构,可用于在酚和烯丙基醇之间形成串联的C–C和C–O键,从而提供各种二氢苯并吡喃类,收率高。还发现该催化剂对维生素E的合成具有很高的活性,可以循环使用几次而不会显着降低其活性。