Three Branch Polyunsaturated Organosilicon and OrganogermanTum Dendrimers

摘要

3-Branch dendrimers of the first generation possessing at the focal point,the silicon atom,a trimethylsilylvinyl or trimethylsilylethynyl group,and at the central germanium atom an isopropyl group have been synthesized using a combined approach or a convergent reaction scheme.NMR spectra of all synthesized compounds are studied,and their molecular masses are calculated and experimentally determined.The key parameters of new dendrimers are given.