Dendrimers consisting of stilbene or distyrylbenzene building blocks synthesis and stability

On the basis of Wittig-Homer reactions and protection group techniques comp ound 7 for the core and the components 9a-c and 11a-c for the dendrons were prepared and linked in the final step. The convergent synthesis yielded co nstitutionally and configurationally pure dendrimers (2a-c, 2a'-c') which c onsist of distyrylbenzene units. Their thermo-oxidative stability in the pr esence of air was studied by chemiluminescence and compared to the dendrime rs 1 consisting of stilbene units, (C) 1999 Elsevier Science Ltd. All right s reserved.