title: Divergent approach for synthesis and terminal modifications of dendritic polyphenylazomethines.
abstract: In the past, dendritic polyphenylazomethines (DPA) have been synthesized via the convergent method. However, the convergent method has problems such as difficult terminal-group modifications and an increased number of steps. Therefore, we synthesized the terminal-protected DPA to construct the dendritic structure via the divergent method. The combination of the convergent method and the divergent method easily achieved the rapid synthesis of a higher generation dendrimer. Furthermore, we succeeded in the synthesis of the water-soluble PEG-DPA via the divergent method using the ester-DPA.
authors.affiliation: Department of Chemistry, Faculty of Science & Technology, Keio University, Yokohama 223-8522, Japan.
authors.forename: Kensaku
authors.initials: K
authors.lastname: Takanashi
authors.forename: Kimihisa
authors.initials: K
authors.lastname: Yamamoto