Ligands with fused spirocyclic substitutions and metal complexes formed with such ligands and having improved performance in OLED applications are disclosed.
Ligands with fused spirocyclic substitutions and metal complexes formed with such ligands and having improved performance in OLED applications are disclosed.
Helical primary structures of 1,3-spiroannelated five-membered rings: (±)-trispiro[4.1.1.4.2.2]heptadecane and (±)-tetraspiro[4.1.1.1.4.2.2.2]heneicosane
作者:Imelda Meyer-Wilmes、Ralf Gerke、Lutz Fitjer
DOI:10.1016/j.tet.2008.12.025
日期:2009.2
A combination of three spiroannelation methods forms the basis for a synthesis of the first two helicalhydrocarbons of 1,3-spiroannelated five-memberedrings.