One-Pot Transformation of Living Cationic Polymerization into a Living Anionic One by Samarium (II) Iodide. Synthesis of Poly (tetrahydrofuran-b-. epsilon …

R Nomura, T Endo - Macromolecules, 1995 - ACS Publications
The first example for the transformation ofliving cationic polymerization into a living anionic
one was described. The cationic propagation ends of living poly (tetrahydrofuran)(poly …

SmI2 as a Reagent in Polymer Chemistry

R Nomura, T Endo - Chemistry–A European Journal, 1998 - Wiley Online Library
The unique reactivity of SmI2 due to its moderate reducing ability has been exploited over
the last decade for the development of new polymerization reactions inaccessible by …

Synthesis of narrow distribution poly (tetrahydrofuran) initiated by alkylboron triflates

BJ McCarthy, TE Hogen-Esch - Macromolecules, 1996 - ACS Publications
One of the most widely studied and generally best understood cationic ring-opening
polymerization processes involves that of tetrahydrofuran (THF). Since the original report of …

Transformation of the cationic growing center of poly (tetrahydrofuran) into a samarium enolate. Block copolymerization of tetrahydrofuran with methyl methacrylate

M Narita, R Nomura, T Endo - Macromolecules, 1998 - ACS Publications
The authors demonstrate a novel polymerization system of methacrylates which involves the
reduction of alkyl 2-bromoisobutyrate by SmI2 in the presence of methacrylates and N, N …

Synthesis of block copolymers through umpolung or treatment of propagating end of living cationic polytetrahydrofuran

R Seto, S Yamada, K Matsumoto, T Endo - Polymer Bulletin, 2019 - Springer
Block copolymers containing polytetrahydrofuran segments were synthesized by umpolung
or propagating end of the cationic living polymer and successive anionic polymerization of …

Transformation of the cationic growing center of poly (tetrahydrofuran) into samarium amide. Block copolymerization of tetrahydrofuran with methyl methacrylate

R Nomura, M Narita, T Endo - Macromolecules, 1996 - ACS Publications
Two-electron reduction of N-tert-butyl-N-methylaziridinium trifluoromethanesulfonate with
samarium (II) iodide in the presence of hexamethylphosphoramide gave the corresponding …

Synthesis of poly(tetrahydrofuran-b-ε-caprolactone) macromonomer via the Sml2-induced transformation

R Nomura, T Endo - Polymer Bulletin, 1995 - Springer
A novel well-defined macromonomer consisting of different types of monomers in
polymerization mechanisms was synthesized for the first time through the SmI 2-induced …

Synthesis of polyolefin/poly (methyl methacrylate) block copolymer using zirconocene catalyst system

Y Fukui, M Murata - Polymer journal, 2001 - nature.com
The reactions of methyl methacrylate (MMA) or I 2 with the living zirconium-polyolefin bond
(Zr-PO) using zirconocene catalyst system were examined. Although the reaction of MMA …

Molecular Technology for Synthesis of Versatile Copolymers via Multiple Polymerization Mechanisms

K Satoh - Molecular Technology: Synthesis Innovation, 2019 - Wiley Online Library
This chapter reviews developments in the synthesis of versatile copolymers via multiple
polymerization mechanisms, especially using mechanistic umpolung transformation of the …

Diiodosamarium based polymerisations

S Agarwal, A Greiner - Journal of the Chemical Society, Perkin …, 2002 - pubs.rsc.org
Pinacol (1, 2-dihydroxy compounds) formation is one of the synthetically important C–C
bond formation reactions18a and is is receiving renewed attention because of the …