Living Polymerization and Stereospecific Polymerization of Diazoacetates

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05521
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Polymer chemistry
• Research Institution: Ehime University
• Principal Investigator: Ihara Eiji 愛媛大学, 理工学研究科(工学系), 教授 (90243592)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: ポリ(置換メチレン) / リビング重合 / 立体特異性重合 / ジアゾ酢酸エステル / パラジウム錯体

Outline of Final Research Achievements

We have established that polymerization of diazoacetates with sterically bulky substituents such as dendron and phosphazene proceeds in a living manner, affording polymers with narrow molecular weight distribution and block copolymers with a well-defined structure. A new initiating system, (naphthoquinone)Pd/borate, was revealed to be effective for controlling the polymerization of non-bulky ethyl diazoacetate.
In order to establish a method for characterizing tacticty of poly(alkoxycarbonylmethylene)s by NMR, tetramer of methyl diazoacetate was prepared and its diastereomeric separation into four isomers was successfully conducted. Two types of new initiating systems for diazoacetates were found to afford polymers with relatively controlled stereostructures.

Free Research Field

高分子合成化学