Synthesis of penta-p-phenylenes with oligo(ethylene glycol) side chains
作者:J. Manuel López-Romero、Rodrigo Rico、Rocío Martínez-Mallorquín、Jesús Hierrezuelo、Elena Guillén、Chengzhi Cai、J. Carlos Otero、Isabel López-Tocón
DOI:10.1016/j.tetlet.2007.06.167
日期:2007.8
We report an efficient synthesis of a series of penta-p-phenylene derivatives with four sidechains of various lengths, including deca(ethylene glycol) groups. The key feature of the synthesis is that the sidechains are efficiently introduced in the last step, facilitating optimization of the sidechains for different applications. Raman spectroscopy study indicates a similarly high rigidity for all