title: Efficient synthesis of poly(phenylazomethine) dendrons allowing access to higher generation dendrimers.
abstract: We have developed a novel synthetic method of phenylazomethine dendrons that uses 4,4'-methylenedianiline instead of 4,4'-diaminobenzophenone to synthesize the precursor of the phenylazomethine dendron and then oxidized the precursor to the next-generation dendron. For this method, the productivity of the dendrons has been significantly increased. Furthermore, as the synthesis of high-generation dendrons becomes easier, synthesis of DPA G5 was achieved. [structure--see text]
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: Hiroshi
authors.initials: H
authors.lastname: Chiba
authors.forename: Masayoshi
authors.initials: M
authors.lastname: Higuchi
authors.forename: Kimihisa
authors.initials: K
authors.lastname: Yamamoto