Anionic Synthesis of Macromonomer Carrying Amino Group Using Diphenylethylene Derivative

Abstract

Anionic synthesis of macromonomer of 1,I-diphenylethylene-type unit carrying amino group has been performed in a variety of solvents. The product was characterized by a combination of 1H NMR spectroscopic and size exclusion chromatographic analysis. Based on the UV/Visible spectroscopic analysis, the crossover reaction of n-butyllithium (n-BuLi) with 1-[4-bis(trimethylsilyl)amino]phenyl]-1-phenylethylene was found to be so slow in benzene, but it was completed in the benzene/THF mixture within 2 h. The synthesis of macromonomer of the1,1-diphenylethylene-type unit (over 95 %) carrying amine-functional group (maximum 94 %) was successful on the basis of 1H NMR spectroscopic analysis.