Catalytic cyclopropanation of polybutadienes | Zendy

Urbano Juan | Zendy; Korthals Brigitte | Zendy; DíazRequejo M. Mar | Zendy; Pérez Pedro J. | Zendy; Mecking Stefan | Zendy

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Catalytic cyclopropanation of polybutadienes

Author(s) -

Urbano Juan,

Korthals Brigitte,

DíazRequejo M. Mar,

Pérez Pedro J.,

Mecking Stefan

Publication year - 2010

Publication title -

journal of polymer science part a: polymer chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.768

H-Index - 152

eISSN - 1099-0518

pISSN - 0887-624X

DOI - 10.1002/pola.24231

Subject(s) - polybutadiene , cyclopropanation , ethyl diazoacetate , polymer chemistry , chemistry , catalysis , boron , surface modification , cyclopropene , polymer , organic chemistry , copolymer

Catalytic cyclopropanation of commercial 1,2‐ or 1,4‐ cis ‐polybutadiene, respectively, with ethyl diazoacetate catalyzed by [Tp Br3 Cu(NCMe)] (Tp Br3 = hydrotris(3,4,5‐tribromo‐1‐pyrazolyl)borate) at room temperature afforded high molecular weight ( M n > 10 5 mol −1 ) side‐chain or main‐chain, respectively, carboxyethyl cyclopropyl‐substituted polymers with variable and controlled degrees of functionalization. Complete functionalization of 1,4‐ cis ‐polybutadiene afforded poly[ethylene‐alt‐(3‐ethoxycarbonyl‐cyclopropene)]. Catalytic hydrogenation of residual double bonds of partially cyclopropanated polybutadienes provided access to the corresponding saturated polyolefins. Thermal properties are reported. © 2010 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2010

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