Synthesis of graft polyrotaxane by simultaneous capping of backbone and grafting from rings of pseudo-polyrotaxane

• Kazuaki Kato,
• Katsunari Inoue,
• Masabumi Kudo and
• Kohzo Ito

Beilstein J. Org. Chem. 2014, 10, 2573–2579, doi:10.3762/bjoc.10.269

• reaction yielded graft polyrotaxanes in a good yield, demonstrating a significant simplification of the synthesis of graft polyrotaxanes. Keywords: branch structure; cyclodextrin; end capping; graft polyrotaxane; polyrotaxane; Introduction Polyrotaxanes, interlocked molecules composed of polymer chains

• (400 MHz, DMSO-d6, 298 K) of GPRs: (a) run 1 and (b) run 2. General synthetic scheme of graft polyrotaxane (GPR) consisting of 1) functionalization of polymer ends, 2) complexation, 3) end capping, 4) chemical modification of rings, and 5) grafting. Simplified synthetic scheme of graft polyrotaxane