Synthesis and Photoisomerization of Azocalixarenes with Dendritic Structures
作者:Hitos Galán、Gunther Hennrich、Javier de Mendoza、Pilar Prados
DOI:10.1002/ejoc.200901394
日期:2010.3
The synthesis of dendricalixarenes 1 and 2 containing azo groups at the upper rim of a calix[4]- or calix[6]arene and the corresponding model compounds 3-5 are described. Because the kinetics of the trans to cisisomerization were too fast for accurate determination of the rate constant, this parameter was obtained from the reverse cis to trans process, which was studied in two different solvents by