Premium
Cationic Rare‐Earth‐Metal Half‐Sandwich Complexes for the Living trans ‐1,4‐Isoprene Polymerization
Author(s) -
Zimmermann Melanie,
Törnroos Karl W.,
Anwander Reiner
Publication year - 2008
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200703514
Subject(s) - borane , rare earth , isoprene , cationic polymerization , reagent , boron , chemistry , polymerization , metal , catalysis , polymer chemistry , earth (classical element) , medicinal chemistry , copolymer , organic chemistry , mineralogy , polymer , physics , mathematical physics
Rare, but well done! Fluorinated borates [Ph 3 C][B(C 6 F 5 ) 4 ] and [PhNMe 2 H][B(C 6 F 5 ) 4 ] and the borane reagent B(C 6 F 5 ) 3 activate rare‐earth‐metal bis(tetramethylaluminate) complexes in a distinct and efficient manner (an activated catalyst is shown in the picture) for the fabrication of synthetic gutta‐percha (99.5 % trans ‐1,4‐polyisoprene, M n =0.8–4.4×10 5 g mol −1 , M n / M w =1.18).
Accelerating Research
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom
Address
John Eccles HouseRobert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom